Year Number
1950 86.885
1951 84.965
1952 80.657
1953 76.183
1954 73.396
1955 72.693
1956 69.468
1957 69.276
1958 70.269
1959 70.547
1960 69.323
1961 71.155
1962 69.636
1963 66.758
1964 65.322
1965 66.507
1966 66.431
1967 70.01
1968 75.381
1969 79.546
1970 81.048
1971 83.266
1972 82.353
1973 79.655
1974 77.087
1975 75.364
1976 73.397
1977 71.748
1978 70.206
1979 68.403
1980 66.27
1981 63.01
1982 60.581
1983 58.486
1984 56.18
1985 53.522
1986 52.315
1987 50.12
1988 47.675
1989 45.921
1990 45.202
1991 44.578
1992 45.025
1993 46.099
1994 47.042
1995 47.469
1996 47.94
1997 47.871
1998 47.45
1999 47.07
2000 46.927
2001 46.929
2002 47.104
2003 47.349
2004 47.477
2005 47.4
2006 47.367
2007 47.099
2008 46.673
2009 46.234
2010 45.865
2011 45.548
2012 45.386
2013 45.244
2014 44.913
2015 44.314
2016 43.786
2017 42.96
2018 42.084
2019 41.499
2020 41.367
2021 41.698
2022 42.42
2023 43.34
2024 44.159
2025 44.716
2026 45.236
2027 45.511
2028 45.679
2029 45.958
2030 46.468
2031 47.305
2032 48.284
2033 49.341
2034 50.39
2035 51.382
2036 52.438
2037 53.47
2038 54.368
2039 54.973
2040 55.202
2041 55.169
2042 54.78
2043 54.202
2044 53.688
2045 53.394
2046 53.398
2047 53.558
2048 53.829
2049 54.124
2050 54.376
2051 54.747
2052 55.065
2053 55.377
2054 55.705
2055 56.077
2056 56.657
2057 57.246
2058 57.826
2059 58.37
2060 58.849
2061 59.422
2062 59.923
2063 60.354
2064 60.738
2065 61.077
2066 61.512
2067 61.923
2068 62.279
2069 62.549
2070 62.735
2071 62.935
2072 63.044
2073 63.11
2074 63.199
2075 63.339
2076 63.558
2077 63.828
2078 64.136
2079 64.465
2080 64.812
2081 65.229
2082 65.668
2083 66.13
2084 66.613
2085 67.107
2086 67.63
2087 68.174
2088 68.722
2089 69.257
2090 69.771
2091 70.252
2092 70.727
2093 71.186
2094 71.618
2095 72.011
2096 72.32
2097 72.617
2098 72.896
2099 73.155
2100 73.399