Year Number
1950 96.042
1951 96.336
1952 96.281
1953 96.084
1954 95.817
1955 95.438
1956 95.703
1957 95.732
1958 95.547
1959 95.193
1960 94.78
1961 95.112
1962 95.238
1963 95.174
1964 94.943
1965 94.484
1966 94.497
1967 94.376
1968 94.098
1969 93.706
1970 93.295
1971 93.135
1972 92.906
1973 92.674
1974 92.405
1975 92.016
1976 91.83
1977 91.489
1978 91.109
1979 90.789
1980 90.513
1981 90.148
1982 90.045
1983 90.206
1984 90.531
1985 90.934
1986 90.373
1987 90.008
1988 89.899
1989 90.003
1990 90.218
1991 89.224
1992 88.373
1993 87.615
1994 86.826
1995 85.925
1996 85.127
1997 84.153
1998 83.117
1999 82.127
2000 81.23
2001 79.995
2002 78.668
2003 77.378
2004 76.263
2005 75.353
2006 73.772
2007 73.056
2008 73.006
2009 73.083
2010 72.856
2011 72.526
2012 71.426
2013 70.116
2014 69.166
2015 68.72
2016 67.833
2017 67.497
2018 67.502
2019 67.418
2020 66.983
2021 66.268
2022 65.219
2023 64.105
2024 63.217
2025 62.615
2026 61.938
2027 61.465
2028 61.193
2029 60.999
2030 60.755
2031 60.303
2032 59.813
2033 59.378
2034 59.044
2035 58.779
2036 58.384
2037 58.024
2038 57.759
2039 57.583
2040 57.447
2041 57.171
2042 56.909
2043 56.736
2044 56.671
2045 56.686
2046 56.591
2047 56.539
2048 56.578
2049 56.715
2050 56.908
2051 56.991
2052 57.107
2053 57.275
2054 57.452
2055 57.578
2056 57.491
2057 57.336
2058 57.199
2059 57.149
2060 57.191
2061 57.159
2062 57.196
2063 57.315
2064 57.469
2065 57.604
2066 57.576
2067 57.517
2068 57.5
2069 57.591
2070 57.799
2071 57.953
2072 58.196
2073 58.531
2074 58.912
2075 59.285
2076 59.496
2077 59.691
2078 59.916
2079 60.197
2080 60.521
2081 60.718
2082 60.951
2083 61.232
2084 61.561
2085 61.915
2086 62.119
2087 62.341
2088 62.614
2089 62.947
2090 63.316
2091 63.521
2092 63.763
2093 64.054
2094 64.396
2095 64.776
2096 65.001
2097 65.253
2098 65.563
2099 65.939
2100 66.365