Year Number
1950 82.414
1951 82.492
1952 82.1
1953 81.725
1954 81.626
1955 81.739
1956 81.056
1957 80.74
1958 80.551
1959 80.18
1960 79.561
1961 83.067
1962 85.995
1963 88.981
1964 92.151
1965 94.88
1966 93.387
1967 92.177
1968 91.353
1969 90.751
1970 90.207
1971 87.029
1972 82.947
1973 78.733
1974 75.094
1975 72.281
1976 68.174
1977 64.867
1978 62.215
1979 59.926
1980 57.811
1981 57.109
1982 56.765
1983 56.667
1984 56.686
1985 56.707
1986 56.469
1987 55.871
1988 55.185
1989 54.46
1990 53.553
1991 53.129
1992 52.249
1993 51.058
1994 49.727
1995 48.489
1996 48.358
1997 48.078
1998 48.139
1999 48.699
2000 49.579
2001 46.952
2002 44.835
2003 43.257
2004 42.035
2005 40.971
2006 37.032
2007 33.847
2008 31.315
2009 29.328
2010 27.796
2011 28.594
2012 29.353
2013 30.136
2014 30.863
2015 31.382
2016 31.278
2017 30.962
2018 30.564
2019 30.245
2020 30.068
2021 29.813
2022 29.768
2023 29.849
2024 29.893
2025 29.814
2026 29.857
2027 29.701
2028 29.502
2029 29.427
2030 29.53
2031 29.67
2032 29.911
2033 30.294
2034 30.795
2035 31.382
2036 32.01
2037 32.694
2038 33.435
2039 34.206
2040 34.972
2041 35.674
2042 36.322
2043 36.993
2044 37.771
2045 38.693
2046 39.656
2047 40.713
2048 41.863
2049 43.044
2050 44.202
2051 45.252
2052 46.223
2053 47.196
2054 48.22
2055 49.308
2056 50.357
2057 51.417
2058 52.512
2059 53.636
2060 54.769
2061 55.796
2062 56.801
2063 57.791
2064 58.719
2065 59.535
2066 60.115
2067 60.55
2068 60.935
2069 61.392
2070 61.992
2071 62.596
2072 63.287
2073 64.1
2074 65.008
2075 65.959
2076 66.804
2077 67.699
2078 68.6
2079 69.419
2080 70.092
2081 70.489
2082 70.711
2083 70.847
2084 70.99
2085 71.171
2086 71.212
2087 71.282
2088 71.401
2089 71.552
2090 71.703
2091 71.709
2092 71.743
2093 71.819
2094 71.939
2095 72.099
2096 72.142
2097 72.198
2098 72.3
2099 72.478
2100 72.728