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...

Fiscal income is defined as the sum of all income items reported on income tax returns, before any deduction. It includes labour income, capital income and mixed income. The concept of fiscal income varies with national tax legislations, so in order to make international comparisons it is preferable to use the concept of national income.

The chart(s) below show(s) how the Fiscal 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 90% - Top 10%] shares split (1913-2015)
Other available data for this indicator

Year	Bottom 90%	Top 10%	Unit
1913	59.27	40.73	Share (%)
1914	59.07	40.93	Share (%)
1915	59.65	40.35	Share (%)
1916	57.92	42.08	Share (%)
1917	59.49	40.51	Share (%)
1918	59.89	40.11	Share (%)
1919	59.68	40.32	Share (%)
1920	60.99	39.01	Share (%)
1921	56.82	43.18	Share (%)
1922	56.28	43.72	Share (%)
1923	58.54	41.46	Share (%)
1924	55.59	44.41	Share (%)
1925	53.65	46.35	Share (%)
1926	54.29	45.71	Share (%)
1927	53.33	46.67	Share (%)
1928	50.71	49.29	Share (%)
1929	53.29	46.71	Share (%)
1930	56.13	43.87	Share (%)
1931	55.46	44.54	Share (%)
1932	53.63	46.37	Share (%)
1933	54.40	45.60	Share (%)
1934	54.22	45.78	Share (%)
1935	55.51	44.49	Share (%)
1936	53.41	46.59	Share (%)
1937	55.77	44.23	Share (%)
1938	55.93	44.07	Share (%)
1939	54.48	45.52	Share (%)
1940	54.71	45.29	Share (%)
1941	58.07	41.93	Share (%)
1942	63.87	36.13	Share (%)
1943	66.31	33.69	Share (%)
1944	67.49	32.51	Share (%)
1945	65.58	34.42	Share (%)
1946	63.30	36.70	Share (%)
1947	65.65	34.35	Share (%)
1948	64.99	35.01	Share (%)
1949	65.25	34.75	Share (%)
1950	64.44	35.56	Share (%)
1951	65.78	34.22	Share (%)
1952	66.79	33.21	Share (%)
1953	67.69	32.31	Share (%)
1954	66.36	33.64	Share (%)
1955	66.06	33.94	Share (%)
1956	66.54	33.46	Share (%)
1957	67.01	32.99	Share (%)
1958	66.44	33.56	Share (%)
1959	66.00	34.00	Share (%)
1960	66.52	33.48	Share (%)
1961	65.75	34.25	Share (%)
1962	65.74	34.26	Share (%)
1963	66.22	33.78	Share (%)
1964	65.59	34.41	Share (%)
1965	65.22	34.78	Share (%)
1966	65.76	34.24	Share (%)
1967	65.21	34.79	Share (%)
1968	65.23	34.77	Share (%)
1969	66.10	33.90	Share (%)
1970	66.52	33.48	Share (%)
1971	66.21	33.79	Share (%)
1972	66.18	33.82	Share (%)
1973	66.31	33.69	Share (%)
1974	66.32	33.68	Share (%)
1975	66.24	33.76	Share (%)
1976	66.25	33.75	Share (%)
1977	66.20	33.80	Share (%)
1978	66.00	34.00	Share (%)
1979	65.50	34.50	Share (%)
1980	65.08	34.92	Share (%)
1981	65.15	34.85	Share (%)
1982	63.97	36.03	Share (%)
1983	62.91	37.09	Share (%)
1984	62.67	37.33	Share (%)
1985	61.92	38.08	Share (%)
1986	59.30	40.70	Share (%)
1987	61.39	38.61	Share (%)
1988	58.97	41.03	Share (%)
1989	59.48	40.52	Share (%)
1990	59.53	40.47	Share (%)
1991	59.91	40.09	Share (%)
1992	58.51	41.49	Share (%)
1993	58.59	41.41	Share (%)
1994	58.57	41.43	Share (%)
1995	57.74	42.26	Share (%)
1996	56.46	43.54	Share (%)
1997	55.30	44.70	Share (%)
1998	54.43	45.57	Share (%)
1999	53.44	46.56	Share (%)
2000	52.29	47.71	Share (%)
2001	54.82	45.18	Share (%)
2002	55.68	44.32	Share (%)
2003	54.93	45.07	Share (%)
2004	53.05	46.95	Share (%)
2005	51.11	48.89	Share (%)
2006	50.27	49.73	Share (%)
2007	49.72	50.28	Share (%)
2008	51.31	48.69	Share (%)
2009	52.91	47.09	Share (%)
2010	51.40	48.60	Share (%)
2011	51.22	48.78	Share (%)
2012	48.67	51.33	Share (%)
2013	50.61	49.39	Share (%)
2014	49.43	50.57	Share (%)
2015	---	50.47	Share (%)

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