Year Number
1950 82.961
1951 81.173
1952 78.563
1953 75.478
1954 72.453
1955 69.803
1956 69.049
1957 68.113
1958 67.203
1959 66.377
1960 65.687
1961 66.634
1962 66.844
1963 66.689
1964 66.573
1965 66.723
1966 69.721
1967 72.246
1968 74.148
1969 74.954
1970 74.359
1971 79.511
1972 83.473
1973 86.499
1974 89.716
1975 94.373
1976 84.525
1977 78.096
1978 73.709
1979 70.16
1980 66.883
1981 67.956
1982 68.66
1983 69.079
1984 69.441
1985 69.835
1986 70.83
1987 71.303
1988 71.349
1989 71.014
1990 70.348
1991 70.012
1992 69.509
1993 68.707
1994 67.437
1995 65.693
1996 64.171
1997 62.107
1998 59.869
1999 57.915
2000 56.491
2001 54.411
2002 52.783
2003 51.44
2004 50.09
2005 48.573
2006 47.216
2007 45.725
2008 44.235
2009 42.92
2010 41.849
2011 41.326
2012 40.946
2013 40.673
2014 40.427
2015 40.169
2016 39.948
2017 39.728
2018 39.508
2019 39.299
2020 39.109
2021 39.011
2022 38.896
2023 38.783
2024 38.697
2025 38.649
2026 38.654
2027 38.679
2028 38.74
2029 38.839
2030 38.986
2031 39.201
2032 39.438
2033 39.713
2034 40.034
2035 40.409
2036 40.839
2037 41.293
2038 41.783
2039 42.311
2040 42.88
2041 43.492
2042 44.111
2043 44.741
2044 45.382
2045 46.03
2046 46.682
2047 47.312
2048 47.925
2049 48.519
2050 49.094
2051 49.666
2052 50.19
2053 50.681
2054 51.157
2055 51.629
2056 52.118
2057 52.584
2058 53.018
2059 53.404
2060 53.733
2061 54.032
2062 54.263
2063 54.462
2064 54.674
2065 54.929
2066 55.263
2067 55.62
2068 56.007
2069 56.422
2070 56.862
2071 57.366
2072 57.89
2073 58.433
2074 58.987
2075 59.546
2076 60.138
2077 60.727
2078 61.317
2079 61.909
2080 62.503
2081 63.093
2082 63.676
2083 64.257
2084 64.833
2085 65.398
2086 65.917
2087 66.431
2088 66.937
2089 67.431
2090 67.916
2091 68.332
2092 68.735
2093 69.139
2094 69.548
2095 69.964
2096 70.279
2097 70.61
2098 70.96
2099 71.321
2100 71.69