Year Years
1950 28.66
1951 28.887
1952 29.345
1953 29.808
1954 30.275
1955 30.748
1956 31.225
1957 31.708
1958 32.195
1959 32.686
1960 33.182
1961 33.68
1962 34.181
1963 34.683
1964 35.183
1965 35.719
1966 36.336
1967 37.031
1968 37.761
1969 38.452
1970 38.914
1971 38.915
1972 38.362
1973 37.273
1974 35.764
1975 34.11
1976 32.671
1977 31.761
1978 31.581
1979 32.183
1980 33.494
1981 35.319
1982 37.335
1983 39.27
1984 40.998
1985 42.434
1986 43.567
1987 44.504
1988 45.346
1989 46.135
1990 46.934
1991 47.815
1992 48.811
1993 49.935
1994 51.18
1995 52.501
1996 53.828
1997 55.086
1998 56.226
1999 57.236
2000 58.146
2001 59.014
2002 59.903
2003 60.844
2004 61.832
2005 62.82
2006 63.741
2007 64.53
2008 65.147
2009 65.589
2010 65.879
2011 66.064
2012 66.21
2013 66.371
2014 66.571
2015 66.821
2016 67.113
2017 67.417
2018 67.71
2019 67.987
2020 68.245
2021 68.484
2022 68.709
2023 68.926
2024 69.135
2025 69.337
2026 69.533
2027 69.723
2028 69.908
2029 70.088
2030 70.265
2031 70.439
2032 70.609
2033 70.777
2034 70.941
2035 71.104
2036 71.264
2037 71.423
2038 71.579
2039 71.734
2040 71.888
2041 72.042
2042 72.195
2043 72.349
2044 72.502
2045 72.656
2046 72.809
2047 72.963
2048 73.115
2049 73.268
2050 73.42
2051 73.572
2052 73.725
2053 73.877
2054 74.031
2055 74.184
2056 74.338
2057 74.491
2058 74.644
2059 74.797
2060 74.951
2061 75.107
2062 75.265
2063 75.424
2064 75.586
2065 75.749
2066 75.912
2067 76.074
2068 76.234
2069 76.393
2070 76.55
2071 76.707
2072 76.864
2073 77.023
2074 77.184
2075 77.347
2076 77.511
2077 77.675
2078 77.839
2079 78.003
2080 78.167
2081 78.332
2082 78.498
2083 78.666
2084 78.836
2085 79.007
2086 79.179
2087 79.352
2088 79.525
2089 79.698
2090 79.871
2091 80.043
2092 80.214
2093 80.385
2094 80.556
2095 80.726
2096 80.896
2097 81.066
2098 81.235
2099 81.404