Year Number
1950 58.45
1951 59.278
1952 59.546
1953 60.056
1954 60.931
1955 61.959
1956 62.12
1957 62.836
1958 63.608
1959 64.009
1960 63.906
1961 63.924
1962 63.341
1963 62.418
1964 61.578
1965 61.021
1966 60.766
1967 60.619
1968 60.542
1969 60.401
1970 60.115
1971 59.801
1972 59.321
1973 58.702
1974 57.972
1975 57.139
1976 56.098
1977 55.033
1978 53.899
1979 52.662
1980 51.342
1981 50.084
1982 48.816
1983 47.607
1984 46.551
1985 45.706
1986 45.239
1987 44.891
1988 44.675
1989 44.581
1990 44.591
1991 44.721
1992 44.926
1993 45.197
1994 45.5
1995 45.798
1996 46.137
1997 46.45
1998 46.721
1999 46.951
2000 47.145
2001 47.301
2002 47.47
2003 47.632
2004 47.75
2005 47.801
2006 48.03
2007 48.158
2008 48.285
2009 48.566
2010 49.085
2011 49.671
2012 50.511
2013 51.5
2014 52.454
2015 53.265
2016 53.991
2017 54.591
2018 55.134
2019 55.733
2020 56.46
2021 57.281
2022 58.192
2023 59.207
2024 60.323
2025 61.529
2026 62.732
2027 64.024
2028 65.386
2029 66.791
2030 68.214
2031 69.52
2032 70.833
2033 72.106
2034 73.276
2035 74.299
2036 75.007
2037 75.551
2038 75.962
2039 76.258
2040 76.434
2041 76.303
2042 76.106
2043 75.852
2044 75.575
2045 75.322
2046 74.964
2047 74.663
2048 74.442
2049 74.305
2050 74.244
2051 74.088
2052 74.04
2053 74.092
2054 74.221
2055 74.407
2056 74.485
2057 74.659
2058 74.915
2059 75.215
2060 75.527
2061 75.703
2062 75.937
2063 76.219
2064 76.545
2065 76.92
2066 77.185
2067 77.53
2068 77.924
2069 78.325
2070 78.704
2071 78.829
2072 78.946
2073 79.075
2074 79.235
2075 79.427
2076 79.354
2077 79.342
2078 79.393
2079 79.505
2080 79.679
2081 79.633
2082 79.688
2083 79.839
2084 80.072
2085 80.375
2086 80.448
2087 80.626
2088 80.897
2089 81.246
2090 81.664
2091 81.822
2092 82.066
2093 82.396
2094 82.801
2095 83.263
2096 83.423
2097 83.672
2098 83.997
2099 84.369
2100 84.774