Year Years
1800 24.24
1801 24.24
1802 24.24
1803 24.24
1804 24.24
1805 24.24
1806 24.24
1807 24.24
1808 24.24
1809 24.24
1810 24.24
1811 24.24
1812 24.24
1813 24.24
1814 24.24
1815 24.24
1816 24.24
1817 24.24
1818 24.24
1819 24.24
1820 24.24
1821 24.24
1822 24.24
1823 24.24
1824 24.24
1825 24.24
1826 24.24
1827 24.24
1828 24.24
1829 24.24
1830 24.24
1831 24.24
1832 24.24
1833 24.24
1834 24.24
1835 24.24
1836 24.24
1837 24.24
1838 24.24
1839 24.24
1840 24.24
1841 24.24
1842 24.24
1843 24.24
1844 24.24
1845 24.24
1846 24.24
1847 24.24
1848 24.24
1849 24.24
1850 24.24
1851 24.24
1852 24.24
1853 24.24
1854 24.24
1855 24.24
1856 24.24
1857 24.24
1858 24.24
1859 24.24
1860 24.24
1861 24.24
1862 24.24
1863 24.24
1864 23.71
1865 23.19
1866 22.66
1867 22.14
1868 21.62
1869 21.66
1870 21.7
1871 21.74
1872 21.76
1873 21.8
1874 21.98
1875 22.17
1876 22.35
1877 22.54
1878 22.72
1879 22.91
1880 23.09
1881 23.28
1882 23.46
1883 23.64
1884 23.83
1885 24.01
1886 24.19
1887 24.37
1888 24.55
1889 24.74
1890 24.92
1891 25.1
1892 25.28
1893 25.46
1894 25.64
1895 25.82
1896 26
1897 26.18
1898 26
1899 25.81
1900 25.64
1901 25.87
1902 26.1
1903 26.32
1904 26.55
1905 26.78
1906 27.01
1907 27.23
1908 27.46
1909 27.68
1910 27.91
1911 30.76
1912 31.16
1913 29.03
1914 28.61
1915 28.21
1916 28.19
1917 25.26
1918 15.55
1919 20.84
1920 16.47
1921 19.65
1922 20.51
1923 29.09
1924 31.49
1925 30.6
1926 33.66
1927 33
1928 34.43
1929 33.21
1930 32.53
1931 26.95
1932 19.25
1933 15.4
1934 34.71
1935 36.18
1936 37.75
1937 36.78
1938 38.37
1939 40.64
1940 38.25
1941 28.35
1942 24.52
1943 23.55
1944 31.16
1945 38.28
1946 44.76
1947 37.12
1948 44.77
1949 47.39
1950 49.55
1951 49.71
1952 50.07
1953 50.43
1954 50.79
1955 51.15
1956 51.51
1957 51.86
1958 52.21
1959 52.58
1960 52.93
1961 53.29
1962 53.65
1963 54.01
1964 54.37
1965 54.73
1966 55.08
1967 55.41
1968 55.72
1969 56.02
1970 56.29
1971 57.09
1972 57.39
1973 57.75
1974 58.09
1975 58.5
1976 58.93
1977 59.55
1978 60.32
1979 61.05
1980 61.73
1981 62.27
1982 62.65
1983 63.04
1984 63.39
1985 63.76
1986 64.07
1987 64.29
1988 64.48
1989 64.75
1990 64.93
1991 65.05
1992 62.39
1993 64.11
1994 63.93
1995 63.86
1996 63
1997 64.35
1998 64.4
1999 64.89
2000 65.21
2001 65.51
2002 65.89
2003 66.34
2004 66.83
2005 67.35
2006 68.02
2007 68.51
2008 68.79
2009 69.29
2010 69.61
2011 69.91
2012 70.51
2013 71.06
2014 71.37
2015 71.63
2016 71.87
2017 72.03
2018 72.19