1824 13.50
1825 13.38
1826 13.27
1827 12.92
1828 13.07
1829 10.47
1830 12.25
1831 13.37
1832 12.42
1833 13.21
1834 14.57
1835 12.97
1836 12.83
1837 11.40
1838 10.82
1839 12.33
1840 11.41
1841 13.20
1842 12.56
1844 11.52
1846 13.74
1847 11.95
1848 12.87
1849 12.16
1850 11.72
1851 11.67
1852 13.51
1853 11.08
1854 12.65
1855 10.85
1856 12.60
1857 13.51
1858 12.08
1859 13.62
1860 11.38
1861 12.76
1862 13.30
1863 13.75
1864 10.76
1865 13.16
1866 13.62
1867 12.72
1868 14.17
1869 12.98
1871 11.34
1872 14.45
1873 13.33
1874 13.41
1879 12.61
1880 14.98
1881 13.09
1882 14.11
1883 13.43
1884 14.04
1885 13.25
1886 13.84
1887 12.34
1888 12.73
1889 12.90
1890 12.82
1891 13.61
1892 14.12
1893 14.15
1894 13.95
1895 13.73
1896 13.18
1897 13.74
1898 14.31
1899 14.11
1900 14.46
1901 13.59
1902 12.99
1903 14.69
1904 14.90
1905 14.10
1906 14.98
1907 14.34
1908 13.90
1909 13.93
1910 15.09
1911 15.78
1912 14.44
1913 14.09
1914 14.12
1915 13.60
1916 14.09
1917 13.19
1918 14.45
1919 13.38
1920 14.38
1921 15.21
1923 13.34
1924 13.07
1925 13.89
1926 13.79
1927 13.39
1928 14.00
1929 13.34
1930 14.26
1931 13.20
1932 14.14
1933 13.42
1934 15.82
1935 14.33
1936 14.10
1937 14.47
1938 14.68
1939 13.60
1940 11.96
1941 12.61
1942 12.91
1943 15.09
1944 13.78
1946 14.11
1947 14.44
1948 15.04
1949 15.24
1950 14.34
1951 14.52
1952 13.42
1953 15.13
1954 13.38
1955 13.27
1956 12.52
1957 14.66
1958 14.05
1959 15.72
1960 13.98
1961 14.94
1962 13.00
1963 12.99
1964 14.01
1965 13.34
1966 14.26
1967 15.14
1968 13.75
1969 13.52
1970 13.50
1971 14.71
1972 13.51
1973 14.24
1974 14.53
1975 14.73
1976 14.51
1977 14.14
1978 13.27
1979 13.34
1980 12.97
1981 13.88
1982 15.24
1983 15.11
1984 13.38
1985 13.46
1986 13.89
1987 12.92
1988 14.93
1989 15.93
1990 15.78
1991 14.53
1992 15.33
1993 14.21
1994 15.58
1995 14.58
1996 12.31
1997 14.62
1998 14.82
1999 15.32
2000 15.89
2001 14.70
2002 15.09
2003 15.65
2004 14.69
2005 15.16
2006 15.63
2007 15.98
2008 15.58
2009 15.13
2010 13.50
2011 16.29
2012 15.47
2013 14.24
2014 16.41
2015 16.42
2016 15.60
2017 15.85
2018 16.94
