Year Number
1950 64.062
1951 64.406
1952 64.764
1953 64.762
1954 64.115
1955 62.864
1956 61.113
1957 59.649
1958 58.88
1959 59.097
1960 60.523
1961 60.875
1962 60.827
1963 61.381
1964 62.612
1965 64.252
1966 68.347
1967 72.284
1968 76.314
1969 80.337
1970 83.996
1971 85.577
1972 87.195
1973 88.492
1974 88.98
1975 88.455
1976 85.639
1977 82.244
1978 78.697
1979 75.433
1980 72.57
1981 69.909
1982 67.5
1983 65.389
1984 63.34
1985 61.239
1986 61.709
1987 61.152
1988 59.974
1989 58.583
1990 57.074
1991 53.471
1992 50.771
1993 48.772
1994 47.337
1995 46.615
1996 45.383
1997 44.452
1998 43.732
1999 43.003
2000 42.129
2001 41.717
2002 40.951
2003 40.206
2004 39.841
2005 39.924
2006 38.363
2007 37.146
2008 36.164
2009 35.177
2010 34.103
2011 33.867
2012 33.332
2013 32.74
2014 32.316
2015 32.09
2016 32.614
2017 33.251
2018 33.968
2019 34.615
2020 35.087
2021 35.598
2022 35.842
2023 35.919
2024 35.935
2025 35.92
2026 35.717
2027 35.491
2028 35.269
2029 35.051
2030 34.836
2031 34.755
2032 34.64
2033 34.552
2034 34.549
2035 34.651
2036 34.846
2037 35.108
2038 35.457
2039 35.867
2040 36.315
2041 36.79
2042 37.261
2043 37.797
2044 38.475
2045 39.324
2046 40.304
2047 41.387
2048 42.559
2049 43.762
2050 44.942
2051 46.051
2052 47.094
2053 48.079
2054 48.996
2055 49.827
2056 50.518
2057 51.069
2058 51.527
2059 51.933
2060 52.305
2061 52.606
2062 52.84
2063 53.027
2064 53.137
2065 53.15
2066 53.068
2067 52.878
2068 52.653
2069 52.475
2070 52.391
2071 52.424
2072 52.51
2073 52.676
2074 52.921
2075 53.231
2076 53.649
2077 54.111
2078 54.633
2079 55.217
2080 55.85
2081 56.575
2082 57.335
2083 58.112
2084 58.861
2085 59.544
2086 60.17
2087 60.716
2088 61.206
2089 61.657
2090 62.066
2091 62.397
2092 62.686
2093 62.948
2094 63.194
2095 63.429
2096 63.594
2097 63.743
2098 63.9
2099 64.091
2100 64.325