Year Number
1950 51.62
1951 52.641
1952 52.992
1953 53.616
1954 54.686
1955 55.997
1956 56.688
1957 57.988
1958 59.396
1959 60.432
1960 60.91
1961 61.407
1962 61.322
1963 60.857
1964 60.375
1965 60.047
1966 60.116
1967 60.164
1968 60.208
1969 60.229
1970 60.214
1971 60.126
1972 60.051
1973 59.939
1974 59.698
1975 59.272
1976 59.108
1977 58.73
1978 58.127
1979 57.309
1980 56.302
1981 55.063
1982 53.783
1983 52.559
1984 51.511
1985 50.726
1986 50.656
1987 50.689
1988 50.816
1989 51.017
1990 51.244
1991 51.535
1992 51.875
1993 52.237
1994 52.563
1995 52.827
1996 53.044
1997 53.25
1998 53.417
1999 53.53
2000 53.593
2001 53.776
2002 53.897
2003 53.976
2004 54.021
2005 54.036
2006 54.103
2007 54.146
2008 54.232
2009 54.485
2010 54.992
2011 55.761
2012 56.775
2013 57.961
2014 59.173
2015 60.267
2016 61.054
2017 61.736
2018 62.353
2019 62.919
2020 63.476
2021 64
2022 64.508
2023 65.034
2024 65.605
2025 66.224
2026 66.779
2027 67.412
2028 68.098
2029 68.794
2030 69.482
2031 70.048
2032 70.619
2033 71.195
2034 71.809
2035 72.486
2036 73.033
2037 73.617
2038 74.236
2039 74.824
2040 75.305
2041 75.443
2042 75.529
2043 75.563
2044 75.584
2045 75.648
2046 75.593
2047 75.604
2048 75.675
2049 75.782
2050 75.897
2051 75.812
2052 75.772
2053 75.763
2054 75.759
2055 75.742
2056 75.506
2057 75.291
2058 75.115
2059 75.008
2060 74.996
2061 74.86
2062 74.834
2063 74.927
2064 75.125
2065 75.408
2066 75.548
2067 75.81
2068 76.151
2069 76.54
2070 76.973
2071 77.214
2072 77.491
2073 77.83
2074 78.241
2075 78.699
2076 78.896
2077 79.16
2078 79.471
2079 79.811
2080 80.182
2081 80.317
2082 80.506
2083 80.742
2084 81.02
2085 81.344
2086 81.414
2087 81.53
2088 81.714
2089 81.975
2090 82.304
2091 82.366
2092 82.513
2093 82.739
2094 83.033
2095 83.393
2096 83.496
2097 83.686
2098 83.963
2099 84.317
2100 84.742