Year Number
1950 81.888
1951 82.706
1952 83.444
1953 84.05
1954 84.507
1955 84.844
1956 86.121
1957 87.052
1958 87.777
1959 88.412
1960 88.998
1961 90.072
1962 91.033
1963 91.811
1964 92.279
1965 92.387
1966 92.964
1967 93.046
1968 92.779
1969 92.332
1970 91.781
1971 91.58
1972 91.171
1973 90.59
1974 89.861
1975 89.015
1976 88.489
1977 87.883
1978 87.148
1979 86.197
1980 84.999
1981 84.187
1982 82.963
1983 81.525
1984 80.122
1985 78.868
1986 77.739
1987 76.826
1988 75.994
1989 75.045
1990 73.903
1991 73.092
1992 72.033
1993 70.839
1994 69.671
1995 68.595
1996 67.769
1997 66.993
1998 66.235
1999 65.441
2000 64.579
2001 63.612
2002 62.651
2003 61.666
2004 60.651
2005 59.634
2006 58.692
2007 57.722
2008 56.77
2009 55.909
2010 55.183
2011 54.611
2012 54.166
2013 53.815
2014 53.5
2015 53.188
2016 52.99
2017 52.754
2018 52.506
2019 52.284
2020 52.1
2021 51.875
2022 51.703
2023 51.559
2024 51.411
2025 51.25
2026 51.117
2027 50.967
2028 50.818
2029 50.703
2030 50.636
2031 50.603
2032 50.616
2033 50.67
2034 50.75
2035 50.852
2036 50.959
2037 51.084
2038 51.244
2039 51.458
2040 51.739
2041 52.041
2042 52.402
2043 52.811
2044 53.248
2045 53.7
2046 54.105
2047 54.524
2048 54.97
2049 55.463
2050 56.016
2051 56.546
2052 57.127
2053 57.751
2054 58.404
2055 59.074
2056 59.655
2057 60.259
2058 60.877
2059 61.492
2060 62.094
2061 62.565
2062 63.03
2063 63.498
2064 63.988
2065 64.515
2066 64.927
2067 65.38
2068 65.881
2069 66.428
2070 67.014
2071 67.466
2072 67.972
2073 68.531
2074 69.149
2075 69.836
2076 70.397
2077 71.031
2078 71.733
2079 72.48
2080 73.25
2081 73.827
2082 74.442
2083 75.089
2084 75.76
2085 76.456
2086 76.948
2087 77.479
2088 78.045
2089 78.639
2090 79.263
2091 79.655
2092 80.085
2093 80.558
2094 81.079
2095 81.645
2096 81.957
2097 82.332
2098 82.77
2099 83.258
2100 83.788