Year Number
1950 55.253
1951 57.686
1952 59.726
1953 61.578
1954 63.162
1955 64.417
1956 65.964
1957 67.279
1958 68.379
1959 69.244
1960 69.848
1961 70
1962 70.21
1963 70.247
1964 69.887
1965 69.089
1966 68.343
1967 67.22
1968 65.998
1969 65.097
1970 64.744
1971 64.749
1972 65.228
1973 66.012
1974 66.811
1975 67.471
1976 68.65
1977 69.592
1978 70.343
1979 70.975
1980 71.49
1981 71.598
1982 71.606
1983 71.492
1984 71.226
1985 70.82
1986 70.152
1987 69.461
1988 68.716
1989 67.903
1990 67.044
1991 66.255
1992 65.384
1993 64.516
1994 63.776
1995 63.223
1996 62.655
1997 62.267
1998 62.014
1999 61.801
2000 61.576
2001 61.493
2002 61.333
2003 61.153
2004 61.026
2005 60.982
2006 60.59
2007 60.336
2008 60.217
2009 60.243
2010 60.444
2011 61.05
2012 61.788
2013 62.606
2014 63.413
2015 64.129
2016 64.956
2017 65.571
2018 66.028
2019 66.404
2020 66.722
2021 66.677
2022 66.684
2023 66.663
2024 66.5
2025 66.167
2026 65.78
2027 65.248
2028 64.65
2029 64.107
2030 63.685
2031 63.291
2032 63.001
2033 62.824
2034 62.751
2035 62.781
2036 62.828
2037 62.965
2038 63.192
2039 63.493
2040 63.842
2041 64.125
2042 64.457
2043 64.817
2044 65.173
2045 65.509
2046 65.737
2047 65.951
2048 66.144
2049 66.313
2050 66.46
2051 66.472
2052 66.468
2053 66.451
2054 66.423
2055 66.379
2056 66.176
2057 65.976
2058 65.792
2059 65.645
2060 65.554
2061 65.372
2062 65.259
2063 65.217
2064 65.236
2065 65.304
2066 65.269
2067 65.304
2068 65.41
2069 65.584
2070 65.832
2071 65.989
2072 66.224
2073 66.545
2074 66.969
2075 67.501
2076 67.959
2077 68.526
2078 69.172
2079 69.846
2080 70.514
2081 70.972
2082 71.428
2083 71.886
2084 72.355
2085 72.846
2086 73.132
2087 73.436
2088 73.77
2089 74.142
2090 74.548
2091 74.739
2092 74.985
2093 75.282
2094 75.627
2095 76.025
2096 76.234
2097 76.503
2098 76.84
2099 77.257
2100 77.762