Age	Description
Children	The population is comprised of individuals below age 20.
Adults	The population is comprised of individuals over age 20.
All Ages	The population is comprised of individuals of all ages.

Population	Description
Female	The population looked at is comprised of female individuals only.
Male	The population looked at is comprised of male individuals only.
Individuals	The base unit is the individual (rather than the household). This is equivalent to assuming no sharing of resources within couples.
Equal-split adults	The base unit is the individual (rather than the household) but resources are split equally within couples.
Tax unit	The base unit is the tax unit defined by national fiscal administrations to measure personal income taxes.

Type	Description
Average	The annual income (or wealth) average within a given group percentile.
Shares	The income (or wealth) share held by a given group percentile.
Thresholds	The minimum income (or wealth) level required to belong to a given group percentile.

Group percentiles	Description
All	Does not separate the population based on the indicator in question (e.g. income or wealth)
Top 1%	Top 1% of the population based on the indicator in question (e.g. income or wealth)
Top 10%	Top 10% of the population based on the indicator in question (e.g. income or wealth)
Bottom 90%	Bottom 90% of the population based on the indicator in question (e.g. income or wealth)
Bottom 50%	Bottom 50% of the population based on the indicator in question (e.g. income or wealth)
...and so on...

Pre-tax national income is the sum of all pre-tax personal income flows accruing to the owners of the production factors, labor and capital, before taking into account the operation of the tax/transfer system, but after taking into account the operation of pension system. The central difference between personal factor income and pre-tax income is the treatment of pensions, which are counted on a contribution basis by factor income and on a distribution basis by pre-tax income.

The chart(s) below show(s) how the Pre-tax national income has being distributed across sets of complementing (they add up to 100%) percentile groups. We have tried to show this data for as many years as possible, but you may find that in some cases the information is just not available for some percentiles.

[Bottom 50% - Next 40% - Top 10%] shares split (1913-2014)
[Bottom 90% - Top 10%] shares split (1913-2014)
[Bottom 99% - Top 1%] shares split (1913-2014)
Other available data for this indicator

Year	Bottom 50%	Next 40%	Top 10%	Unit
1913	15.31	42.38	42.31	Share (%)
1914	15.13	41.92	42.95	Share (%)
1915	15.36	42.45	42.19	Share (%)
1916	14.73	40.88	44.39	Share (%)
1917	14.64	40.46	44.90	Share (%)
1918	14.85	41.51	43.64	Share (%)
1919	14.50	40.07	45.43	Share (%)
1920	15.01	41.55	43.44	Share (%)
1921	14.06	39.41	46.53	Share (%)
1922	14.36	40.10	45.54	Share (%)
1923	15.04	41.86	43.10	Share (%)
1924	14.29	40.45	45.26	Share (%)
1925	13.75	39.17	47.08	Share (%)
1926	13.65	38.91	47.44	Share (%)
1927	13.85	39.39	46.76	Share (%)
1928	13.58	38.46	47.96	Share (%)
1929	13.91	39.41	46.68	Share (%)
1930	14.16	40.50	45.34	Share (%)
1931	14.14	40.86	45.00	Share (%)
1932	13.65	39.70	46.65	Share (%)
1933	13.61	39.52	46.87	Share (%)
1934	13.43	38.54	48.03	Share (%)
1935	14.12	38.82	47.06	Share (%)
1936	14.02	38.24	47.74	Share (%)
1937	14.37	39.11	46.52	Share (%)
1938	14.35	39.19	46.46	Share (%)
1939	13.98	38.15	47.87	Share (%)
1940	14.20	38.07	47.73	Share (%)
1941	14.86	39.35	45.79	Share (%)
1942	18.09	40.84	41.07	Share (%)
1943	19.04	42.90	38.06	Share (%)
1944	19.61	44.19	36.20	Share (%)
1945	15.69	48.49	35.82	Share (%)
1946	17.05	45.74	37.21	Share (%)
1947	17.22	45.70	37.08	Share (%)
1948	17.39	43.70	38.91	Share (%)
1949	17.09	44.55	38.36	Share (%)
1950	17.55	43.46	38.99	Share (%)
1951	18.45	43.84	37.71	Share (%)
1952	18.99	44.50	36.51	Share (%)
1953	19.34	45.17	35.49	Share (%)
1954	18.63	45.47	35.90	Share (%)
1955	18.83	44.63	36.54	Share (%)
1956	19.28	44.96	35.76	Share (%)
1957	19.19	45.05	35.76	Share (%)
1958	18.35	45.95	35.70	Share (%)
1959	18.14	45.70	36.16	Share (%)
1960	18.19	46.18	35.63	Share (%)
1961	17.62	46.55	35.83	Share (%)
1962	19.50	44.40	36.09	Share (%)
1964	18.70	44.32	36.98	Share (%)
1966	19.56	44.16	36.29	Share (%)
1967	20.83	43.89	35.29	Share (%)
1968	20.56	43.93	35.51	Share (%)
1969	21.20	44.67	34.13	Share (%)
1970	21.00	45.17	33.84	Share (%)
1971	20.35	45.29	34.36	Share (%)
1972	20.13	45.22	34.65	Share (%)
1973	20.27	44.76	34.97	Share (%)
1974	20.73	45.21	34.05	Share (%)
1975	20.14	45.44	34.41	Share (%)
1976	20.29	45.43	34.28	Share (%)
1977	20.00	45.24	34.76	Share (%)
1978	19.90	45.45	34.65	Share (%)
1979	20.08	45.03	34.89	Share (%)
1980	19.89	45.87	34.24	Share (%)
1981	19.51	45.77	34.72	Share (%)
1982	18.96	46.14	34.90	Share (%)
1983	18.31	46.27	35.42	Share (%)
1984	17.88	45.46	36.66	Share (%)
1985	17.88	45.46	36.66	Share (%)
1986	17.66	45.86	36.47	Share (%)
1987	17.26	45.13	37.61	Share (%)
1988	16.95	44.11	38.95	Share (%)
1989	16.93	44.40	38.67	Share (%)
1990	16.80	44.48	38.71	Share (%)
1991	16.62	44.83	38.56	Share (%)
1992	15.83	44.39	39.78	Share (%)
1993	15.90	44.55	39.56	Share (%)
1994	15.78	44.37	39.86	Share (%)
1995	15.38	43.96	40.66	Share (%)
1996	15.08	43.37	41.55	Share (%)
1997	14.86	42.87	42.27	Share (%)
1998	14.91	42.46	42.63	Share (%)
1999	14.77	41.88	43.35	Share (%)
2000	14.61	41.50	43.88	Share (%)
2001	14.95	42.25	42.80	Share (%)
2002	14.82	42.45	42.73	Share (%)
2003	14.52	42.62	42.87	Share (%)
2004	14.19	41.91	43.90	Share (%)
2005	13.84	41.10	45.06	Share (%)
2006	13.54	40.44	46.03	Share (%)
2007	13.74	40.47	45.80	Share (%)
2008	13.71	40.98	45.31	Share (%)
2009	13.59	42.07	44.34	Share (%)
2010	13.03	41.22	45.75	Share (%)
2011	12.73	41.35	45.92	Share (%)
2012	12.38	40.48	47.14	Share (%)
2013	12.77	40.91	46.32	Share (%)
2014	12.55	40.44	47.02	Share (%)

Year	Bottom 90%	Top 10%	Unit
1913	57.69	42.31	Share (%)
1914	57.05	42.95	Share (%)
1915	57.81	42.19	Share (%)
1916	55.61	44.39	Share (%)
1917	55.10	44.90	Share (%)
1918	56.36	43.64	Share (%)
1919	54.57	45.43	Share (%)
1920	56.56	43.44	Share (%)
1921	53.47	46.53	Share (%)
1922	54.46	45.54	Share (%)
1923	56.90	43.10	Share (%)
1924	54.74	45.26	Share (%)
1925	52.92	47.08	Share (%)
1926	52.56	47.44	Share (%)
1927	53.24	46.76	Share (%)
1928	52.04	47.96	Share (%)
1929	53.32	46.68	Share (%)
1930	54.66	45.34	Share (%)
1931	55.00	45.00	Share (%)
1932	53.35	46.65	Share (%)
1933	53.13	46.87	Share (%)
1934	51.97	48.03	Share (%)
1935	52.94	47.06	Share (%)
1936	52.26	47.74	Share (%)
1937	53.48	46.52	Share (%)
1938	53.54	46.46	Share (%)
1939	52.13	47.87	Share (%)
1940	52.27	47.73	Share (%)
1941	54.21	45.79	Share (%)
1942	58.93	41.07	Share (%)
1943	61.94	38.06	Share (%)
1944	63.80	36.20	Share (%)
1945	64.18	35.82	Share (%)
1946	62.79	37.21	Share (%)
1947	62.92	37.08	Share (%)
1948	61.09	38.91	Share (%)
1949	61.64	38.36	Share (%)
1950	61.01	38.99	Share (%)
1951	62.29	37.71	Share (%)
1952	63.49	36.51	Share (%)
1953	64.51	35.49	Share (%)
1954	64.10	35.90	Share (%)
1955	63.46	36.54	Share (%)
1956	64.24	35.76	Share (%)
1957	64.24	35.76	Share (%)
1958	64.30	35.70	Share (%)
1959	63.84	36.16	Share (%)
1960	64.37	35.63	Share (%)
1961	64.17	35.83	Share (%)
1962	63.91	36.09	Share (%)
1964	63.02	36.98	Share (%)
1966	63.71	36.29	Share (%)
1967	64.71	35.29	Share (%)
1968	64.49	35.51	Share (%)
1969	65.87	34.13	Share (%)
1970	66.17	33.84	Share (%)
1971	65.64	34.36	Share (%)
1972	65.35	34.65	Share (%)
1973	65.03	34.97	Share (%)
1974	65.94	34.05	Share (%)
1975	65.58	34.41	Share (%)
1976	65.72	34.28	Share (%)
1977	65.24	34.76	Share (%)
1978	65.35	34.65	Share (%)
1979	65.11	34.89	Share (%)
1980	65.76	34.24	Share (%)
1981	65.28	34.72	Share (%)
1982	65.10	34.90	Share (%)
1983	64.58	35.42	Share (%)
1984	63.34	36.66	Share (%)
1985	63.34	36.66	Share (%)
1986	63.52	36.47	Share (%)
1987	62.39	37.61	Share (%)
1988	61.05	38.95	Share (%)
1989	61.33	38.67	Share (%)
1990	61.29	38.71	Share (%)
1991	61.45	38.56	Share (%)
1992	60.22	39.78	Share (%)
1993	60.44	39.56	Share (%)
1994	60.15	39.86	Share (%)
1995	59.34	40.66	Share (%)
1996	58.45	41.55	Share (%)
1997	57.73	42.27	Share (%)
1998	57.37	42.63	Share (%)
1999	56.65	43.35	Share (%)
2000	56.11	43.88	Share (%)
2001	57.20	42.80	Share (%)
2002	57.27	42.73	Share (%)
2003	57.14	42.87	Share (%)
2004	56.10	43.90	Share (%)
2005	54.94	45.06	Share (%)
2006	53.97	46.03	Share (%)
2007	54.20	45.80	Share (%)
2008	54.69	45.31	Share (%)
2009	55.66	44.34	Share (%)
2010	54.25	45.75	Share (%)
2011	54.08	45.92	Share (%)
2012	52.86	47.14	Share (%)
2013	53.68	46.32	Share (%)
2014	52.99	47.02	Share (%)

Year	Bottom 99%	Top 1%	Unit
1913	---	18.84	Share (%)
1914	---	19.33	Share (%)
1915	---	18.70	Share (%)
1916	---	20.64	Share (%)
1917	---	20.14	Share (%)
1918	---	18.95	Share (%)
1919	---	21.01	Share (%)
1920	---	18.40	Share (%)
1921	---	18.10	Share (%)
1922	---	17.63	Share (%)
1923	---	16.89	Share (%)
1924	---	17.61	Share (%)
1925	---	19.95	Share (%)
1926	---	21.21	Share (%)
1927	---	20.33	Share (%)
1928	---	21.39	Share (%)
1929	---	21.16	Share (%)
1930	---	18.09	Share (%)
1931	---	15.03	Share (%)
1932	---	13.91	Share (%)
1933	---	15.16	Share (%)
1934	---	17.15	Share (%)
1935	---	17.36	Share (%)
1936	---	19.24	Share (%)
1937	---	19.04	Share (%)
1938	---	17.19	Share (%)
1939	---	18.48	Share (%)
1940	---	19.31	Share (%)
1941	---	19.49	Share (%)
1942	---	18.49	Share (%)
1943	---	17.18	Share (%)
1944	---	14.84	Share (%)
1945	---	14.28	Share (%)
1946	---	14.16	Share (%)
1947	---	14.57	Share (%)
1948	---	15.77	Share (%)
1949	---	15.17	Share (%)
1950	---	15.85	Share (%)
1951	---	14.94	Share (%)
1952	---	14.20	Share (%)
1953	---	13.26	Share (%)
1954	---	13.49	Share (%)
1955	---	14.13	Share (%)
1956	---	13.39	Share (%)
1957	---	13.17	Share (%)
1958	---	12.47	Share (%)
1959	---	13.07	Share (%)
1960	---	12.59	Share (%)
1961	---	12.45	Share (%)
1962	87.42	12.57	Share (%)
1964	87.08	12.92	Share (%)
1966	87.36	12.64	Share (%)
1967	87.86	12.14	Share (%)
1968	87.58	12.42	Share (%)
1969	88.49	11.51	Share (%)
1970	89.21	10.79	Share (%)
1971	88.92	11.08	Share (%)
1972	88.88	11.12	Share (%)
1973	88.98	11.02	Share (%)
1974	89.44	10.55	Share (%)
1975	89.41	10.58	Share (%)
1976	89.59	10.41	Share (%)
1977	89.25	10.75	Share (%)
1978	89.37	10.63	Share (%)
1979	88.85	11.15	Share (%)
1980	89.33	10.67	Share (%)
1981	88.95	11.05	Share (%)
1982	88.74	11.26	Share (%)
1983	88.49	11.51	Share (%)
1984	87.50	12.50	Share (%)
1985	87.45	12.55	Share (%)
1986	87.79	12.21	Share (%)
1987	86.69	13.31	Share (%)
1988	85.12	14.88	Share (%)
1989	85.54	14.46	Share (%)
1990	85.46	14.54	Share (%)
1991	86.11	13.89	Share (%)
1992	84.98	15.01	Share (%)
1993	85.36	14.64	Share (%)
1994	85.32	14.69	Share (%)
1995	84.72	15.28	Share (%)
1996	84.04	15.97	Share (%)
1997	83.37	16.63	Share (%)
1998	83.08	16.92	Share (%)
1999	82.29	17.71	Share (%)
2000	81.73	18.27	Share (%)
2001	82.74	17.27	Share (%)
2002	82.94	17.06	Share (%)
2003	82.80	17.20	Share (%)
2004	81.68	18.32	Share (%)
2005	80.63	19.37	Share (%)
2006	79.90	20.10	Share (%)
2007	80.13	19.87	Share (%)
2008	80.48	19.52	Share (%)
2009	81.46	18.54	Share (%)
2010	80.20	19.80	Share (%)
2011	80.40	19.60	Share (%)
2012	79.22	20.78	Share (%)
2013	80.41	19.59	Share (%)
2014	79.80	20.20	Share (%)

Adults | Equal-split adults | Average
Adults | Equal-split adults | Share  [Distribution across complementing percentiles]
Adults | Equal-split adults | Threshold