Year Number
1950 50.62
1951 51.437
1952 51.817
1953 51.993
1954 52.026
1955 51.816
1956 52.425
1957 52.649
1958 52.809
1959 53.011
1960 53.104
1961 53.438
1962 53.347
1963 53.355
1964 53.675
1965 54.176
1966 54.242
1967 54.078
1968 54.186
1969 54.654
1970 55.242
1971 55.289
1972 54.986
1973 54.433
1974 53.699
1975 52.833
1976 52.568
1977 52.138
1978 51.539
1979 50.775
1980 49.899
1981 49.04
1982 48.061
1983 47.109
1984 46.29
1985 45.637
1986 45.273
1987 44.948
1988 44.722
1989 44.542
1990 44.343
1991 44.738
1992 45.015
1993 45.252
1994 45.523
1995 45.8
1996 45.937
1997 46.065
1998 46.156
1999 46.139
2000 45.992
2001 45.943
2002 45.805
2003 45.596
2004 45.372
2005 45.216
2006 45.418
2007 45.496
2008 45.44
2009 45.301
2010 45.181
2011 45.424
2012 45.717
2013 46.081
2014 46.516
2015 47.009
2016 47.571
2017 48.206
2018 48.892
2019 49.596
2020 50.307
2021 51.077
2022 51.831
2023 52.608
2024 53.459
2025 54.409
2026 55.449
2027 56.567
2028 57.739
2029 58.93
2030 60.117
2031 61.26
2032 62.384
2033 63.473
2034 64.518
2035 65.5
2036 66.338
2037 67.097
2038 67.788
2039 68.444
2040 69.089
2041 69.617
2042 70.116
2043 70.602
2044 71.081
2045 71.555
2046 71.918
2047 72.286
2048 72.645
2049 72.977
2050 73.281
2051 73.473
2052 73.633
2053 73.787
2054 73.98
2055 74.216
2056 74.408
2057 74.66
2058 74.95
2059 75.228
2060 75.483
2061 75.635
2062 75.783
2063 75.931
2064 76.083
2065 76.247
2066 76.316
2067 76.395
2068 76.503
2069 76.65
2070 76.831
2071 76.902
2072 77.028
2073 77.198
2074 77.392
2075 77.604
2076 77.676
2077 77.79
2078 77.932
2079 78.104
2080 78.309
2081 78.374
2082 78.483
2083 78.645
2084 78.855
2085 79.112
2086 79.213
2087 79.377
2088 79.591
2089 79.84
2090 80.139
2091 80.278
2092 80.471
2093 80.72
2094 81.026
2095 81.39
2096 81.559
2097 81.789
2098 82.075
2099 82.405
2100 82.776