Year Number
1950 95.176
1951 95.633
1952 94.982
1953 94.155
1954 93.427
1955 92.677
1956 92.365
1957 92.282
1958 92.051
1959 91.374
1960 90.211
1961 90.629
1962 90.241
1963 89.458
1964 88.812
1965 88.525
1966 89.474
1967 90.513
1968 91.547
1969 92.351
1970 92.812
1971 94.087
1972 94.903
1973 95.388
1974 95.705
1975 95.93
1976 96.933
1977 97.666
1978 98.178
1979 98.473
1980 98.546
1981 99.479
1982 99.946
1983 100.095
1984 100.164
1985 100.325
1986 99.562
1987 98.703
1988 97.66
1989 96.166
1990 94.027
1991 95.366
1992 96.123
1993 96.489
1994 96.878
1995 97.61
1996 98.171
1997 98.718
1998 99.236
1999 99.521
2000 99.44
2001 99.748
2002 99.659
2003 99.322
2004 98.957
2005 98.687
2006 98.395
2007 98.21
2008 98.087
2009 97.905
2010 97.6
2011 97.248
2012 96.655
2013 95.936
2014 95.221
2015 94.546
2016 93.653
2017 92.862
2018 92.088
2019 91.195
2020 90.133
2021 89.082
2022 87.857
2023 86.54
2024 85.238
2025 83.998
2026 82.765
2027 81.572
2028 80.41
2029 79.253
2030 78.09
2031 76.99
2032 75.886
2033 74.796
2034 73.741
2035 72.733
2036 71.818
2037 70.933
2038 70.085
2039 69.283
2040 68.528
2041 67.863
2042 67.236
2043 66.643
2044 66.074
2045 65.525
2046 65.033
2047 64.546
2048 64.08
2049 63.651
2050 63.267
2051 62.926
2052 62.617
2053 62.329
2054 62.049
2055 61.768
2056 61.488
2057 61.2
2058 60.912
2059 60.632
2060 60.365
2061 60.09
2062 59.822
2063 59.564
2064 59.314
2065 59.073
2066 58.822
2067 58.573
2068 58.338
2069 58.135
2070 57.973
2071 57.819
2072 57.696
2073 57.602
2074 57.524
2075 57.458
2076 57.378
2077 57.304
2078 57.241
2079 57.202
2080 57.19
2081 57.163
2082 57.158
2083 57.172
2084 57.203
2085 57.249
2086 57.266
2087 57.294
2088 57.334
2089 57.391
2090 57.466
2091 57.501
2092 57.55
2093 57.613
2094 57.692
2095 57.787
2096 57.835
2097 57.897
2098 57.976
2099 58.074
2100 58.192