Year Number
1950 84.114
1951 83.681
1952 83.536
1953 82.908
1954 81.729
1955 80.139
1956 80.921
1957 80.677
1958 80.042
1959 79.481
1960 79.275
1961 77.711
1962 75.975
1963 74.149
1964 72.235
1965 70.325
1966 68.306
1967 66.218
1968 64.361
1969 62.816
1970 61.557
1971 60.655
1972 59.243
1973 57.584
1974 55.945
1975 54.56
1976 54.402
1977 54.197
1978 54.089
1979 54.158
1980 54.446
1981 50.769
1982 48.155
1983 46.278
1984 44.729
1985 43.266
1986 43.83
1987 43.711
1988 43.231
1989 42.659
1990 42.052
1991 40.878
1992 40.029
1993 39.48
1994 39.055
1995 38.654
1996 39.052
1997 39.096
1998 38.854
1999 38.471
2000 38.123
2001 36.019
2002 34.422
2003 33.464
2004 33.045
2005 32.909
2006 26.615
2007 22.468
2008 19.821
2009 18.144
2010 17.031
2011 17.857
2012 18.499
2013 19.11
2014 19.665
2015 20.055
2016 20.28
2017 20.349
2018 20.436
2019 20.64
2020 20.929
2021 21.098
2022 21.279
2023 21.534
2024 21.81
2025 22.025
2026 22.258
2027 22.311
2028 22.34
2029 22.493
2030 22.808
2031 23.206
2032 23.663
2033 24.214
2034 24.82
2035 25.423
2036 25.984
2037 26.504
2038 27.028
2039 27.549
2040 28.031
2041 28.41
2042 28.678
2043 28.975
2044 29.432
2045 30.092
2046 30.853
2047 31.756
2048 32.811
2049 33.954
2050 35.113
2051 36.211
2052 37.277
2053 38.391
2054 39.617
2055 40.969
2056 42.316
2057 43.698
2058 45.197
2059 46.85
2060 48.633
2061 50.39
2062 52.241
2063 54.158
2064 56.026
2065 57.738
2066 59.139
2067 60.326
2068 61.37
2069 62.341
2070 63.268
2071 63.909
2072 64.4
2073 64.888
2074 65.471
2075 66.146
2076 66.61
2077 67.148
2078 67.762
2079 68.409
2080 69.056
2081 69.481
2082 69.868
2083 70.285
2084 70.745
2085 71.207
2086 71.387
2087 71.53
2088 71.698
2089 71.893
2090 72.072
2091 72.016
2092 71.965
2093 71.94
2094 71.937
2095 71.952
2096 71.859
2097 71.742
2098 71.661
2099 71.677
2100 71.807