Year Years
1950 39.2
1951 39.487
1952 40.066
1953 40.657
1954 41.259
1955 41.871
1956 42.49
1957 43.111
1958 43.724
1959 44.313
1960 44.859
1961 45.344
1962 45.752
1963 46.076
1964 46.321
1965 46.5
1966 46.633
1967 46.753
1968 46.888
1969 47.057
1970 47.277
1971 47.555
1972 47.885
1973 48.261
1974 48.682
1975 49.152
1976 49.67
1977 50.231
1978 50.82
1979 51.426
1980 52.029
1981 52.61
1982 53.158
1983 53.665
1984 54.131
1985 54.588
1986 55.085
1987 55.638
1988 56.227
1989 56.804
1990 57.27
1991 57.504
1992 57.423
1993 56.981
1994 56.179
1995 55.027
1996 53.565
1997 51.917
1998 50.219
1999 48.586
2000 47.159
2001 46.067
2002 45.35
2003 45.019
2004 45.067
2005 45.448
2006 46.072
2007 46.811
2008 47.555
2009 48.246
2010 48.85
2011 49.369
2012 49.849
2013 50.326
2014 50.802
2015 51.274
2016 51.74
2017 52.197
2018 52.644
2019 53.082
2020 53.515
2021 53.949
2022 54.387
2023 54.834
2024 55.291
2025 55.759
2026 56.238
2027 56.722
2028 57.21
2029 57.698
2030 58.186
2031 58.673
2032 59.159
2033 59.643
2034 60.123
2035 60.598
2036 61.069
2037 61.535
2038 61.995
2039 62.448
2040 62.894
2041 63.33
2042 63.758
2043 64.176
2044 64.584
2045 64.978
2046 65.36
2047 65.727
2048 66.081
2049 66.42
2050 66.745
2051 67.055
2052 67.351
2053 67.634
2054 67.907
2055 68.171
2056 68.427
2057 68.677
2058 68.924
2059 69.167
2060 69.408
2061 69.648
2062 69.885
2063 70.12
2064 70.351
2065 70.581
2066 70.809
2067 71.035
2068 71.259
2069 71.48
2070 71.698
2071 71.91
2072 72.116
2073 72.315
2074 72.507
2075 72.693
2076 72.873
2077 73.048
2078 73.221
2079 73.392
2080 73.562
2081 73.731
2082 73.899
2083 74.066
2084 74.233
2085 74.399
2086 74.564
2087 74.728
2088 74.891
2089 75.053
2090 75.213
2091 75.373
2092 75.532
2093 75.69
2094 75.849
2095 76.006
2096 76.164
2097 76.322
2098 76.479
2099 76.636