"year" "733" "734" "807" "unweighted" "weighted1" "weighted2" "1" 1856 NA NA 240 240 240 240 "2" 1857 NA NA 233.3 233.3 233.3 233.3 "3" 1858 NA NA 104.2 104.2 104.2 104.2 "4" 1859 NA NA 58.3 58.3 58.3 58.3 "5" 1860 NA NA 141.7 141.7 141.7 141.7 "6" 1861 NA NA 78 78 78 78 "7" 1862 NA NA NA NA NA NA "8" 1863 NA NA NA NA NA NA "9" 1864 NA NA NA NA NA NA "10" 1865 NA -103.5 30 -36.8 -75.9 -87.7 "11" 1866 NA -39 121.7 41.3 -5.8 -20 "12" 1867 NA 206.5 258.2 232.3 217.2 212.6 "13" 1868 NA 23 150.8 86.9 49.4 38.1 "14" 1869 NA 47.5 122 84.8 62.9 56.3 "15" 1870 23.7 77.5 14.2 38.5 37.5 30.3 "16" 1871 20.5 115.2 84.2 73.3 50.5 33.5 "17" 1872 -3.8 -15.8 17.9 -0.6 -5.5 -4.9 "18" 1873 10.5 19.2 68.8 32.8 16.9 12.6 "19" 1874 -6 17.3 103.2 38.2 8 -1.2 "20" 1875 72.4 38.6 51.2 54.1 61.8 67.8 "21" 1876 2.8 -1.8 74.2 25.1 6.6 3.4 "22" 1877 25.5 -10.6 -27.8 -4.3 12 20.1 "23" 1878 25.3 4.7 -46.9 -5.6 14.7 21.5 "24" 1879 24.8 76.6 100.6 67.3 44.1 32.5 "25" 1880 -93.8 -85.9 2.5 -59.1 -84.9 -91.2 "26" 1881 39.9 31 -1.7 23.1 34.6 38.1 "27" 1882 -57.3 -50.8 -77.5 -61.9 -57 -56.8 "28" 1883 -31.8 -38.2 -47.2 -39.1 -34.6 -32.8 "29" 1884 -64.5 -66.4 -48.2 -59.7 -63.9 -64.5 "30" 1885 87.3 31.7 -20.8 32.8 64.7 78.5 "31" 1886 46.8 28 40.4 38.4 41.2 44.3 "32" 1887 60.9 24.8 62.9 49.5 51.3 56.4 "33" 1888 60.4 72 97.1 76.5 66.1 62.5 "34" 1889 76.7 63.5 109.6 83.2 75.4 75.6 "35" 1890 -44.6 48.9 146.8 50.4 -5.9 -29.6 "36" 1891 -24.2 -94.5 -39.5 -52.7 -44.2 -33.3 "37" 1892 -38.8 25.7 -3.4 -5.5 -18.9 -30.1 "38" 1893 -136.2 -51.5 -32.7 -73.5 -106.1 -123.9 "39" 1894 -32.9 -60.2 -10.7 -34.6 -38.7 -36 "40" 1895 -51.2 -96.2 -85.8 -77.8 -65.8 -57.5 "41" 1896 47.9 23.3 -15.4 18.6 36.8 43.8 "42" 1897 -62.5 -70.6 -50.2 -61.1 -63.8 -63.3 "43" 1898 2.5 -120.5 -107.6 -75.2 -38.4 -14.8 "44" 1899 15.1 -53.3 -39.8 -26 -7.2 5.6 "45" 1900 0.3 63.8 67.2 43.8 22.2 9.4 "46" 1901 -4.2 56.3 48.6 33.6 15.9 4.3 "47" 1902 -43.1 16.3 18.2 -2.9 -22.8 -34.6 "48" 1903 -54 -57.9 -61.6 -57.8 -55.6 -54.6 "49" 1904 19.3 39.7 -1.2 19.3 23.4 21.5 "50" 1905 -13.9 -17.8 -37.2 -22.9 -16.6 -14.8 "51" 1906 4.3 -13.4 -0.2 -3.1 -0.8 2 "52" 1907 -76.1 49.7 25.4 -0.3 -35 -58.6 "53" 1908 -74.8 -66.2 -37.8 -59.6 -69.9 -73.1 "54" 1909 -78.6 -47.2 -12.4 -46.1 -65.5 -73.5 "55" 1910 29.8 105.1 109.8 81.5 55.7 40.6 "56" 1911 -149.9 -45.7 3.3 -64.1 -111 -134.3 "57" 1912 -134.2 -103.5 -87.3 -108.4 -122.7 -129.6 "58" 1913 -78.8 -105.5 -88.4 -90.9 -86.6 -82.3 "59" 1914 19.9 13.7 17.5 17 18.1 19.1 "60" 1915 0.9 -54.5 -64.8 -39.4 -18.6 -7.1 "61" 1916 -81.4 -64.4 57 -29.6 -67.1 -77 "62" 1917 -40.8 -83.2 -15.8 -46.6 -50.5 -45.7 "63" 1918 -71.9 -15.8 -17 -34.9 -52.9 -63.9 "64" 1919 -66.9 -38.7 -44.8 -50.1 -57.7 -63 "65" 1920 -125.6 -58.6 -24.9 -69.7 -100.4 -115.5 "66" 1921 -15.6 73 44.8 34.1 12.5 -3.4 "67" 1922 -94.3 -53.8 18.9 -43.1 -75.5 -87.3 "68" 1923 -68.2 -78.7 -36.4 -61.1 -68.8 -69 "69" 1924 -27.2 -51.4 -5.8 -28.2 -32.3 -29.9 "70" 1925 -20.7 -5.4 29.9 1.3 -13 -17.9 "71" 1926 95.3 53.9 -8.9 46.8 76.8 88.4 "72" 1927 -24.2 29.6 55.2 20.2 -4.1 -16.1 "73" 1928 4 41.1 0.6 15.2 13.8 8.6 "74" 1929 -23.3 -29.2 -51.6 -34.7 -26.9 -24.6 "75" 1930 -37.8 -61.7 -36.7 -45.4 -44.1 -40.7 "76" 1931 40.1 21.5 2.7 21.4 32.4 37.1 "77" 1932 -56.7 -52.2 -46.8 -51.9 -54.8 -55.9 "78" 1933 -63 -11.1 1.2 -24.3 -44.5 -55.4 "79" 1934 122.6 191.3 132.8 148.9 141.8 131.4 "80" 1935 -48.5 21.2 22.2 -1.7 -24.7 -38.6 "81" 1936 47.3 65.8 57 56.7 53 49.8 "82" 1937 -33.3 -6.6 27 -4.3 -21.9 -29 "83" 1938 -50.8 12.6 12.6 -8.5 -29.2 -41.7 "84" 1939 21.7 41.8 22.3 28.6 27.2 24.2 "85" 1940 70.4 106.2 58.2 78.2 79.2 74.7 "86" 1941 -39.1 -31.8 11.6 -19.8 -33.6 -37.3 "87" 1942 -41.6 2.3 34.6 -1.6 -24.4 -34.8 "88" 1943 16.1 80.5 90.9 62.5 38.7 25.4 "89" 1944 -63.7 -68.9 -23.4 -52 -62.3 -63.6 "90" 1945 -34.3 -16.3 14.7 -12 -26 -31.2 "91" 1946 -37.4 40.2 44.8 15.8 -10.7 -26.3 "92" 1947 -10.3 37.5 13.4 13.5 4.2 -3.9 "93" 1948 -99.6 -42.9 18.2 -41.4 -76 -90.5 "94" 1949 -76.9 -87.8 -11.9 -58.9 -75.3 -77.2 "95" 1950 53.8 68.7 123.2 81.9 62.7 56.9 "96" 1951 -8.8 -22.1 42.6 3.9 -8.8 -9.6 "97" 1952 -39.4 -25.4 12.2 -17.6 -32 -36.8 "98" 1953 -31.4 36.7 11.9 5.7 -10 -22.1 "99" 1954 -1.4 103 115.8 72.4 35 13.7 "100" 1955 -83.8 -52.5 -4.8 -47 -69.8 -78.6 "101" 1956 -51 36.9 26.5 4.1 -21.8 -38.7 "102" 1957 -39.8 6.4 49.5 5.4 -21.1 -32.5 "103" 1958 59.9 87.8 38.4 62 65.9 63 "104" 1959 73.6 62.5 20.6 52.2 66.9 71.3 "105" 1960 29.8 44.4 -12.6 20.6 30.8 31 "106" 1961 2.4 8.2 -7.3 1.1 3.3 3 "107" 1962 -24.8 21.8 25.9 7.7 -8.6 -18.1 "108" 1963 -48 35.6 35 7.5 -19.6 -36.1 "109" 1964 -65.8 -83.2 -73.3 -74.1 -71 -68.1 "110" 1965 -80.4 -40.4 -5.4 -42.1 -64.4 -74.1 "111" 1966 13.8 34.7 -14.2 11.4 17.4 15.9 "112" 1967 -17.2 -7.5 13 -3.9 -12.4 -15.4 "113" 1968 -5.3 -38.3 -43.8 -29.2 -16.9 -10.1 "114" 1969 -13.5 25.2 38.3 16.7 0.6 -7.8 "115" 1970 11.5 -4.8 -14.7 -2.6 5.3 9 "116" 1971 -71.3 -66.3 -13.8 -50.5 -65.9 -69.7 "117" 1972 -25.8 6.7 25.5 2.1 -13.4 -20.8 "118" 1973 -19.7 -66.9 -52.8 -46.4 -34.7 -26.2 "119" 1974 13.9 9.7 7.9 10.5 12.3 13.3 "120" 1975 -78.9 -107.3 -57.7 -81.3 -85.1 -82.1 "121" 1976 -32.1 -11 -53.8 -32.3 -27.9 -29.8 "122" 1977 34.2 64 45.4 47.9 43 38.1 "123" 1978 1.2 17.2 46.6 21.7 8.7 4 "124" 1979 30.2 -40 -38.3 -16 6.5 20.3 "125" 1980 23.2 48.2 32 34.5 30.6 26.5 "126" 1981 109.7 116 68.3 98 108.5 109.8 "127" 1982 -71.2 -77.6 6.4 -47.5 -67.5 -70.7 "128" 1983 -1.1 1.6 -9.2 -2.9 -0.9 -0.9 "129" 1984 30.8 -47.6 -6.9 -7.9 7 20.4 "130" 1985 -15.7 -19.9 -6.8 -14.1 -16.2 -16.1 "131" 1986 84.8 83.9 40.9 69.9 81.5 84 "132" 1987 39.8 6.8 -54.4 -2.6 24.3 34.1 "133" 1988 73.2 20.7 -1.3 30.9 53.8 65.4 "134" 1989 36.8 42.2 71.2 50.1 40.6 38 "135" 1990 20.1 24.1 21.8 22 21.3 20.6 "136" 1991 21.4 -22.9 -20.2 -7.2 6.5 15.2 "137" 1992 88.4 18.3 -20.6 28.7 61.9 77.8 "138" 1993 21.5 -53.8 44.6 4.1 2.8 12.4 "139" 1994 59.8 93.8 129.4 94.4 73.9 65.3 "140" 1995 88.2 62.5 117.9 89.6 83.4 85.5 "141" 1996 117.3 97.4 144.8 119.8 113.9 115.3 "142" 1997 90.9 50 33.3 58.1 75.8 84.8 "143" 1998 1.4 -9.2 65 19.1 3 1.2 "144" 1999 94.2 74.2 85.8 84.8 88.2 91.6 "145" 2000 140.4 102.9 127.5 123.6 129.4 135.5 "146" 2001 178.5 117.5 100 132 156.5 169.5 "147" 2002 144.2 16.7 116.7 92.5 107.8 127.7 "148" 2003 199.4 130.8 149.2 159.8 177.4 190 "149" 2004 167.5 24.2 48.3 80 120.5 147.5