Year Number
1950 102.22
1951 101.334
1952 99.862
1953 98.336
1954 96.858
1955 95.376
1956 94.512
1957 93.808
1958 93.093
1959 92.244
1960 91.186
1961 92.072
1962 92.673
1963 93.17
1964 93.851
1965 94.93
1966 96.238
1967 96.927
1968 97.233
1969 97.177
1970 96.633
1971 98.197
1972 99.57
1973 100.606
1974 101.132
1975 101.115
1976 104.793
1977 107.075
1978 108.245
1979 108.833
1980 109.194
1981 107.75
1982 106.728
1983 105.76
1984 104.442
1985 102.763
1986 102.388
1987 101.325
1988 100
1989 98.881
1990 98.051
1991 92.785
1992 88.547
1993 84.852
1994 81.235
1995 77.58
1996 77.267
1997 76.575
1998 75.645
1999 74.711
2000 73.876
2001 73.008
2002 72.112
2003 71.229
2004 70.424
2005 69.805
2006 69.313
2007 68.892
2008 68.553
2009 68.227
2010 67.83
2011 67.328
2012 66.839
2013 66.298
2014 65.627
2015 64.775
2016 64.111
2017 63.286
2018 62.357
2019 61.421
2020 60.524
2021 59.604
2022 58.805
2023 58.068
2024 57.312
2025 56.521
2026 55.771
2027 54.969
2028 54.175
2029 53.47
2030 52.902
2031 52.46
2032 52.109
2033 51.854
2034 51.686
2035 51.598
2036 51.606
2037 51.678
2038 51.8
2039 51.952
2040 52.121
2041 52.287
2042 52.449
2043 52.62
2044 52.817
2045 53.048
2046 53.271
2047 53.506
2048 53.733
2049 53.921
2050 54.053
2051 54.08
2052 54.055
2053 53.993
2054 53.913
2055 53.832
2056 53.708
2057 53.581
2058 53.464
2059 53.373
2060 53.321
2061 53.278
2062 53.274
2063 53.311
2064 53.39
2065 53.508
2066 53.64
2067 53.815
2068 54.034
2069 54.299
2070 54.611
2071 54.932
2072 55.291
2073 55.703
2074 56.18
2075 56.724
2076 57.273
2077 57.891
2078 58.553
2079 59.221
2080 59.874
2081 60.433
2082 60.982
2083 61.523
2084 62.062
2085 62.6
2086 63.023
2087 63.45
2088 63.886
2089 64.334
2090 64.798
2091 65.148
2092 65.527
2093 65.939
2094 66.387
2095 66.873
2096 67.239
2097 67.656
2098 68.125
2099 68.642
2100 69.205