Year Number
1950 86.465
1951 85.473
1952 83.514
1953 81.592
1954 80.048
1955 78.763
1956 78.375
1957 78.452
1958 78.564
1959 78.338
1960 77.689
1961 78.488
1962 78.458
1963 78.025
1964 77.746
1965 77.85
1966 78.491
1967 79.288
1968 80.135
1969 80.801
1970 81.179
1971 81.477
1972 81.415
1973 81.13
1974 80.777
1975 80.44
1976 81.223
1977 81.812
1978 82.244
1979 82.494
1980 82.538
1981 83.921
1982 84.881
1983 85.52
1984 86.007
1985 86.45
1986 86.986
1987 87.54
1988 87.944
1989 87.865
1990 87.073
1991 88.144
1992 88.709
1993 88.911
1994 89.133
1995 89.668
1996 87.922
1997 86.193
1998 84.416
1999 82.361
2000 79.938
2001 76.024
2002 72.03
2003 68.211
2004 64.768
2005 61.734
2006 59.629
2007 57.757
2008 56.076
2009 54.477
2010 52.894
2011 51.728
2012 50.428
2013 49.106
2014 47.911
2015 46.903
2016 45.954
2017 45.273
2018 44.749
2019 44.224
2020 43.632
2021 43.27
2022 42.778
2023 42.227
2024 41.736
2025 41.352
2026 40.977
2027 40.7
2028 40.505
2029 40.347
2030 40.206
2031 40.136
2032 40.106
2033 40.098
2034 40.096
2035 40.098
2036 40.133
2037 40.172
2038 40.253
2039 40.431
2040 40.738
2041 41.173
2042 41.725
2043 42.396
2044 43.185
2045 44.094
2046 45.113
2047 46.242
2048 47.466
2049 48.75
2050 50.066
2051 51.376
2052 52.709
2053 54.045
2054 55.371
2055 56.682
2056 57.917
2057 59.11
2058 60.275
2059 61.417
2060 62.529
2061 63.523
2062 64.49
2063 65.416
2064 66.297
2065 67.143
2066 67.864
2067 68.539
2068 69.204
2069 69.901
2070 70.646
2071 71.346
2072 72.105
2073 72.886
2074 73.627
2075 74.286
2076 74.789
2077 75.235
2078 75.65
2079 76.082
2080 76.563
2081 77.01
2082 77.521
2083 78.076
2084 78.643
2085 79.206
2086 79.659
2087 80.122
2088 80.592
2089 81.065
2090 81.53
2091 81.853
2092 82.18
2093 82.508
2094 82.832
2095 83.151
2096 83.303
2097 83.468
2098 83.65
2099 83.847
2100 84.049