Year Number
1950 79.98
1951 80.705
1952 81.039
1953 81.068
1954 80.876
1955 80.519
1956 81.363
1957 81.84
1958 82.042
1959 82.057
1960 81.939
1961 82.95
1962 83.612
1963 84.011
1964 84.217
1965 84.267
1966 85.269
1967 85.945
1968 86.351
1969 86.521
1970 86.484
1971 87.315
1972 87.766
1973 87.942
1974 87.976
1975 87.958
1976 88.487
1977 88.846
1978 89.047
1979 89.047
1980 88.808
1981 90.368
1982 91.539
1983 92.344
1984 92.792
1985 92.85
1986 95.371
1987 97.482
1988 99.196
1989 100.688
1990 102.173
1991 99.295
1992 96.895
1993 94.982
1994 93.394
1995 91.959
1996 92.496
1997 92.701
1998 92.668
1999 92.576
2000 92.542
2001 93.31
2002 93.957
2003 94.501
2004 94.901
2005 95.126
2006 95.912
2007 96.436
2008 96.725
2009 96.812
2010 96.714
2011 96.722
2012 96.515
2013 96.108
2014 95.514
2015 94.75
2016 94.22
2017 93.487
2018 92.604
2019 91.635
2020 90.62
2021 89.8
2022 88.926
2023 88.005
2024 87.037
2025 86.031
2026 85.224
2027 84.345
2028 83.423
2029 82.487
2030 81.551
2031 80.755
2032 79.932
2033 79.085
2034 78.207
2035 77.297
2036 76.477
2037 75.613
2038 74.719
2039 73.813
2040 72.905
2041 72.075
2042 71.233
2043 70.381
2044 69.524
2045 68.669
2046 67.893
2047 67.112
2048 66.33
2049 65.549
2050 64.777
2051 64.086
2052 63.395
2053 62.715
2054 62.056
2055 61.425
2056 60.885
2057 60.36
2058 59.855
2059 59.377
2060 58.93
2061 58.558
2062 58.206
2063 57.875
2064 57.565
2065 57.278
2066 57.051
2067 56.833
2068 56.626
2069 56.434
2070 56.26
2071 56.121
2072 55.99
2073 55.867
2074 55.753
2075 55.648
2076 55.567
2077 55.487
2078 55.409
2079 55.337
2080 55.274
2081 55.222
2082 55.171
2083 55.124
2084 55.088
2085 55.066
2086 55.054
2087 55.047
2088 55.049
2089 55.064
2090 55.093
2091 55.13
2092 55.173
2093 55.225
2094 55.29
2095 55.37
2096 55.451
2097 55.54
2098 55.64
2099 55.752
2100 55.877