Calculate Average Service Time on US Circuit Courts

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Average Years of Service in All U.S. Circuit Courts
Note: This tool is still under development.

Year	N Judges	Total Years Exp.	Average Exp.
1801	18	18	1
1802	22	37	1.68
1803	5	8	1.6
1804	5	10	2
1805	5	12	2.4
1806	6	15	2.5
1807	5	12	2.4
1808	5	14	2.8
1809	6	17	2.83
1810	5	15	3
1811	5	17	3.4
1812	5	19	3.8
1813	5	21	4.2
1814	5	23	4.6
1815	6	26	4.33
1816	6	29	4.83
1817	6	32	5.33
1818	6	35	5.83
1819	6	38	6.33
1820	6	41	6.83
1821	6	44	7.33
1822	6	47	7.83
1823	6	50	8.33
1824	6	53	8.83
1825	6	56	9.33
1826	6	59	9.83
1827	6	62	10.33
1828	6	65	10.83
1829	6	68	11.33
1830	6	71	11.83
1831	6	74	12.33
1832	6	77	12.83
1833	6	80	13.33
1834	6	83	13.83
1835	6	86	14.33
1836	6	89	14.83
1837	6	92	15.33
1838	6	95	15.83
1839	6	98	16.33
1840	6	101	16.83
1841	6	104	17.33
1842	6	107	17.83
1843	6	110	18.33
1844	6	113	18.83
1845	6	116	19.33
1846	6	82	13.67
1847	6	85	14.17
1848	6	88	14.67
1849	6	91	15.17
1850	6	94	15.67
1851	6	97	16.17
1852	6	100	16.67
1853	6	103	17.17
1854	6	106	17.67
1855	8	111	13.88
1856	7	60	8.57
1857	7	64	9.14
1858	7	68	9.71
1859	7	72	10.29
1860	7	76	10.86
1861	7	80	11.43
1862	7	84	12
1863	7	88	12.57
1864	3	3	1
1865	3	3	1
1866	3	3	1
1867	3	3	1
1868	3	3	1
1869	9	9	1
1870	12	18	1.5
1871	12	27	2.25
1872	12	36	3
1873	12	45	3.75
1874	12	54	4.5
1875	13	64	4.92
1876	12	66	5.5
1877	13	76	5.85
1878	13	78	6
1879	12	73	6.08
1880	11	70	6.36
1881	11	66	6
1882	12	75	6.25
1883	11	78	7.09
1884	14	89	6.36
1885	12	76	6.33
1886	14	87	6.21
1887	13	87	6.69
1888	13	97	7.46
1889	13	107	8.23
1890	13	113	8.69
1891	14	117	8.36
1892	22	91	4.14
1893	28	116	4.14
1894	26	97	3.73
1895	28	122	4.36
1896	28	147	5.25
1897	29	173	5.97
1898	28	192	6.86
1899	32	217	6.78
1900	32	239	7.47
1901	31	258	8.32
1902	33	278	8.42
1903	34	298	8.76
1904	32	303	9.47
1905	38	326	8.58
1906	37	322	8.7
1907	38	339	8.92
1908	35	336	9.6
1909	37	370	10
1910	36	361	10.03
1911	42	392	9.33
1912	40	390	9.75
1913	41	422	10.29
1914	39	396	10.15
1915	37	398	10.76
1916	41	425	10.37
1917	41	393	9.59
1918	40	363	9.08
1919	41	380	9.27
1920	41	368	8.98
1921	43	406	9.44
1922	43	415	9.65
1923	42	430	10.24
1924	43	462	10.74
1925	44	445	10.11
1926	44	473	10.75
1927	44	500	11.36
1928	46	526	11.43
1929	53	478	9.02
1930	49	462	9.43
1931	51	470	9.22
1932	51	438	8.59
1933	55	491	8.93
1934	53	519	9.79
1935	57	570	10
1936	56	586	10.46
1937	65	626	9.63
1938	67	651	9.72
1939	72	668	9.28
1940	76	662	8.71
1941	78	725	9.29
1942	73	730	10
1943	75	771	10.28
1944	71	798	11.24
1945	74	824	11.14
1946	71	841	11.85
1947	70	873	12.47
1948	69	898	13.01
1949	73	883	12.1
1950	76	899	11.83
1951	77	944	12.26
1952	77	1019	13.23
1953	73	1023	14.01
1954	83	1068	12.87
1955	84	1082	12.88
1956	86	1127	13.1
1957	91	1216	13.36
1958	92	1252	13.61
1959	96	1221	12.72
1960	94	1268	13.49
1961	105	1371	13.06
1962	109	1414	12.97
1963	106	1334	12.58
1964	107	1351	12.63
1965	110	1372	12.47
1966	122	1417	11.61
1967	124	1488	12
1968	129	1601	12.41
1969	136	1664	12.24
1970	141	1724	12.23
1971	147	1752	11.92
1972	147	1837	12.5
1973	149	1900	12.75
1974	149	1950	13.09
1975	150	2031	13.54
1976	148	1955	13.21
1977	153	1989	13
1978	149	1979	13.28
1979	180	2087	11.59
1980	181	2047	11.31
1981	201	2119	10.54
1982	203	2034	10.02
1983	201	2134	10.62
1984	207	2250	10.87
1985	223	2349	10.53
1986	230	2484	10.8
1987	229	2555	11.16
1988	231	2712	11.74
1989	230	2844	12.37
1990	240	2925	12.19
1991	241	3006	12.47
1992	247	3195	12.94
1993	246	3348	13.61
1994	254	3404	13.4
1995	258	3551	13.76
1996	249	3551	14.26
1997	250	3681	14.72
1998	258	3819	14.8
1999	257	3889	15.13
2000	254	3871	15.24
2001	256	4036	15.77
2002	263	4199	15.97
2003	268	4264	15.91
2004	272	4497	16.53
2005	272	4604	16.93
2006	276	4822	17.47
2007	273	4868	17.83
2008	271	4921	18.16
2009	270	5067	18.77
2010	277	5223	18.86
2011	282	5416	19.21
2012	276	5366	19.44

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