Year Number
1950 85.18
1951 87.124
1952 88.586
1953 90.102
1954 91.844
1955 93.72
1956 96.111
1957 98.58
1958 100.792
1959 102.343
1960 103.022
1961 105.694
1962 107.392
1963 108.319
1964 108.862
1965 109.233
1966 108.254
1967 107.048
1968 105.658
1969 104.061
1970 102.3
1971 101.807
1972 101.089
1973 100.286
1974 99.573
1975 99.037
1976 99.55
1977 100.036
1978 100.518
1979 100.992
1980 101.459
1981 102.968
1982 104.185
1983 105.202
1984 106.201
1985 107.298
1986 108.552
1987 109.88
1988 110.921
1989 110.691
1990 108.258
1991 106.763
1992 102.783
1993 96.645
1994 90.074
1995 85.125
1996 84.625
1997 86.065
1998 89.054
1999 91.913
2000 93.216
2001 91.874
2002 89.299
2003 86.057
2004 83.311
2005 81.71
2006 80.933
2007 81.088
2008 81.789
2009 82.299
2010 82.211
2011 82.133
2012 81.405
2013 80.265
2014 79.096
2015 78.069
2016 76.792
2017 75.739
2018 74.735
2019 73.527
2020 72.037
2021 70.683
2022 69.038
2023 67.287
2024 65.689
2025 64.351
2026 63.192
2027 62.262
2028 61.466
2029 60.65
2030 59.75
2031 58.91
2032 58.006
2033 57.095
2034 56.259
2035 55.53
2036 54.93
2037 54.396
2038 53.915
2039 53.464
2040 53.026
2041 52.624
2042 52.226
2043 51.851
2044 51.522
2045 51.254
2046 51.036
2047 50.86
2048 50.722
2049 50.617
2050 50.545
2051 50.519
2052 50.526
2053 50.527
2054 50.466
2055 50.316
2056 50.074
2057 49.758
2058 49.42
2059 49.136
2060 48.951
2061 48.838
2062 48.803
2063 48.84
2064 48.936
2065 49.082
2066 49.239
2067 49.436
2068 49.682
2069 49.992
2070 50.373
2071 50.782
2072 51.246
2073 51.746
2074 52.248
2075 52.732
2076 53.151
2077 53.547
2078 53.935
2079 54.33
2080 54.742
2081 55.12
2082 55.523
2083 55.936
2084 56.351
2085 56.772
2086 57.145
2087 57.516
2088 57.905
2089 58.332
2090 58.802
2091 59.221
2092 59.681
2093 60.181
2094 60.719
2095 61.297
2096 61.836
2097 62.413
2098 63.031
2099 63.686
2100 64.37