Year	Years
1800	31
1801	31
1802	31
1803	31
1804	31
1805	31
1806	31
1807	31
1808	31
1809	31
1810	31
1811	31
1812	31
1813	31
1814	31
1815	31
1816	31
1817	31
1818	31
1819	31
1820	31
1821	31
1822	31
1823	31
1824	31
1825	31
1826	31
1827	31
1828	31
1829	31
1830	31
1831	31
1832	31
1833	31
1834	31
1835	31
1836	31
1837	31
1838	31
1839	31
1840	31
1841	31
1842	31
1843	31
1844	31
1845	31
1846	31
1847	31
1848	31
1849	31
1850	31
1851	31
1852	31
1853	31
1854	31
1855	31
1856	31
1857	31
1858	31
1859	31
1860	31
1861	31
1862	31
1863	31
1864	31
1865	31
1866	31
1867	31
1868	31
1869	31
1870	31
1871	31.04
1872	31.07
1873	31.11
1874	31.14
1875	31.18
1876	31.21
1877	31.25
1878	31.28
1879	31.32
1880	31.35
1881	31.39
1882	31.42
1883	31.46
1884	31.5
1885	31.53
1886	31.57
1887	31.6
1888	31.64
1889	31.67
1890	31.71
1891	31.74
1892	31.78
1893	31.81
1894	31.85
1895	31.88
1896	31.92
1897	31.95
1898	31.99
1899	32.03
1900	32.06
1901	32.1
1902	32.13
1903	32.17
1904	32.2
1905	32.24
1906	32.27
1907	32.31
1908	32.34
1909	32.38
1910	32.41
1911	32.45
1912	32.49
1913	32.52
1914	32.56
1915	32.59
1916	32.63
1917	32.66
1918	12.65
1919	32.73
1920	32.77
1921	32.8
1922	32.84
1923	32.87
1924	32.91
1925	32.94
1926	32.98
1927	33.02
1928	33.05
1929	33.09
1930	33.12
1931	33.16
1932	33.19
1933	33.23
1934	33.26
1935	33.3
1936	33.33
1937	33.37
1938	33.4
1939	33.44
1940	33.48
1941	33.51
1942	33.55
1943	33.58
1944	33.62
1945	33.96
1946	34.31
1947	34.65
1948	34.99
1949	35.33
1950	35.68
1951	36.01
1952	36.6
1953	37.19
1954	37.77
1955	38.34
1956	38.89
1957	39.45
1958	40
1959	40.55
1960	41.09
1961	41.64
1962	42.19
1963	42.76
1964	43.34
1965	43.94
1966	44.56
1967	45.2
1968	45.86
1969	46.53
1970	47.21
1971	47.59
1972	48.2
1973	48.74
1974	49.24
1975	49.57
1976	49.96
1977	50.3
1978	50.66
1979	51.06
1980	51.53
1981	52
1982	52.49
1983	52.96
1984	53.31
1985	53.72
1986	54.27
1987	54.78
1988	55.21
1989	55.34
1990	55.46
1991	55.61
1992	55.99
1993	56.35
1994	56.36
1995	56.46
1996	56.43
1997	56.85
1998	57.07
1999	57.34
2000	57.56
2001	57.76
2002	58.24
2003	58.59
2004	59.02
2005	59.47
2006	59.86
2007	60.27
2008	60.78
2009	61.37
2010	61.82
2011	62.24
2012	62.63
2013	63.02
2014	63.41
2015	63.9
2016	64.43
2017	64.71
2018	64.98