Year Number
1950 83.013
1951 82.885
1952 81.754
1953 80.092
1954 78.541
1955 77.546
1956 76.9
1957 76.688
1958 77.219
1959 78.573
1960 80.665
1961 80.711
1962 81.664
1963 83.231
1964 84.975
1965 86.562
1966 85.527
1967 85.131
1968 84.871
1969 84.324
1970 83.308
1971 81.149
1972 78.683
1973 76.128
1974 73.673
1975 71.334
1976 68.927
1977 66.5
1978 64.256
1979 62.337
1980 60.724
1981 58.559
1982 56.875
1983 55.48
1984 54.056
1985 52.439
1986 50.964
1987 49.085
1988 47.092
1989 45.385
1990 44.116
1991 42.774
1992 42.042
1993 41.655
1994 41.227
1995 40.608
1996 40.632
1997 40.238
1998 39.701
1999 39.398
2000 39.463
2001 39.312
2002 39.332
2003 39.281
2004 38.955
2005 38.384
2006 38.479
2007 38.581
2008 38.471
2009 38.11
2010 37.606
2011 37.409
2012 37.144
2013 36.955
2014 36.965
2015 37.211
2016 37.587
2017 38.176
2018 38.981
2019 39.983
2020 41.175
2021 42.463
2022 43.954
2023 45.609
2024 47.37
2025 49.198
2026 50.959
2027 52.787
2028 54.668
2029 56.588
2030 58.533
2031 60.398
2032 62.244
2033 64.09
2034 65.967
2035 67.893
2036 69.628
2037 71.398
2038 73.172
2039 74.895
2040 76.527
2041 77.749
2042 78.895
2043 79.988
2044 81.086
2045 82.243
2046 83.174
2047 84.167
2048 85.212
2049 86.245
2050 87.205
2051 87.78
2052 88.303
2053 88.848
2054 89.542
2055 90.485
2056 91.345
2057 92.478
2058 93.826
2059 95.273
2060 96.73
2061 97.846
2062 99.007
2063 100.133
2064 101.094
2065 101.795
2066 101.865
2067 101.685
2068 101.306
2069 100.852
2070 100.429
2071 99.639
2072 98.889
2073 98.226
2074 97.663
2075 97.184
2076 96.371
2077 95.733
2078 95.208
2079 94.768
2080 94.451
2081 93.871
2082 93.396
2083 93.104
2084 93.019
2085 93.082
2086 92.84
2087 92.792
2088 92.897
2089 93.119
2090 93.473
2091 93.63
2092 93.954
2093 94.409
2094 94.964
2095 95.612
2096 96.017
2097 96.434
2098 96.847
2099 97.303
2100 97.833