Year Number
1950 85.025
1951 86.019
1952 86.29
1953 86.67
1954 87.39
1955 88.418
1956 89.709
1957 91.283
1958 92.934
1959 94.469
1960 95.807
1961 96.848
1962 97.869
1963 98.633
1964 98.874
1965 98.496
1966 98.032
1967 96.793
1968 95.163
1969 93.665
1970 92.525
1971 90.401
1972 89.009
1973 87.939
1974 86.638
1975 84.871
1976 82.995
1977 80.661
1978 78.118
1979 75.84
1980 74.14
1981 72.961
1982 72.341
1983 72.2
1984 72.268
1985 72.327
1986 71.807
1987 71.171
1988 70.363
1989 69.487
1990 68.656
1991 67.853
1992 67.187
1993 66.573
1994 65.882
1995 65.05
1996 64.087
1997 62.968
1998 61.734
1999 60.447
2000 59.131
2001 58.231
2002 57.094
2003 55.724
2004 54.198
2005 52.653
2006 51.884
2007 50.88
2008 49.713
2009 48.513
2010 47.389
2011 46.17
2012 45.347
2013 44.754
2014 44.194
2015 43.596
2016 43.409
2017 43.079
2018 42.74
2019 42.58
2020 42.669
2021 42.863
2022 43.256
2023 43.777
2024 44.294
2025 44.738
2026 45.133
2027 45.463
2028 45.728
2029 45.952
2030 46.147
2031 46.306
2032 46.418
2033 46.489
2034 46.529
2035 46.549
2036 46.55
2037 46.537
2038 46.518
2039 46.499
2040 46.49
2041 46.488
2042 46.491
2043 46.549
2044 46.73
2045 47.076
2046 47.584
2047 48.242
2048 49.023
2049 49.876
2050 50.767
2051 51.705
2052 52.666
2053 53.655
2054 54.673
2055 55.718
2056 56.751
2057 57.785
2058 58.813
2059 59.823
2060 60.803
2061 61.681
2062 62.513
2063 63.302
2064 64.055
2065 64.775
2066 65.372
2067 65.943
2068 66.458
2069 66.875
2070 67.18
2071 67.285
2072 67.277
2073 67.222
2074 67.202
2075 67.263
2076 67.295
2077 67.427
2078 67.644
2079 67.914
2080 68.228
2081 68.524
2082 68.893
2083 69.329
2084 69.82
2085 70.351
2086 70.835
2087 71.378
2088 71.968
2089 72.583
2090 73.21
2091 73.736
2092 74.294
2093 74.873
2094 75.455
2095 76.023
2096 76.424
2097 76.846
2098 77.275
2099 77.692
2100 78.093