Year Number
1950 82.53
1951 82.913
1952 83.096
1953 83.146
1954 83.178
1955 83.259
1956 84.307
1957 85.181
1958 85.927
1959 86.565
1960 87.109
1961 88.532
1962 89.61
1963 90.434
1964 91.09
1965 91.605
1966 92.615
1967 93.391
1968 93.926
1969 94.185
1970 94.17
1971 94.7
1972 94.881
1973 94.789
1974 94.516
1975 94.115
1976 94.281
1977 94.207
1978 93.953
1979 93.566
1980 93.076
1981 93.126
1982 92.987
1983 92.709
1984 92.334
1985 91.887
1986 91.958
1987 91.924
1988 91.786
1989 91.537
1990 91.183
1991 90.943
1992 90.533
1993 90.008
1994 89.431
1995 88.835
1996 88.246
1997 87.593
1998 86.891
1999 86.144
2000 85.358
2001 84.676
2002 83.913
2003 83.093
2004 82.232
2005 81.336
2006 81.047
2007 80.661
2008 80.187
2009 79.64
2010 79.031
2011 78.61
2012 78.091
2013 77.495
2014 76.841
2015 76.138
2016 75.554
2017 74.904
2018 74.202
2019 73.464
2020 72.702
2021 72.088
2022 71.438
2023 70.761
2024 70.066
2025 69.363
2026 68.821
2027 68.247
2028 67.656
2029 67.066
2030 66.487
2031 66.055
2032 65.608
2033 65.153
2034 64.692
2035 64.231
2036 63.899
2037 63.539
2038 63.156
2039 62.76
2040 62.355
2041 62.057
2042 61.727
2043 61.37
2044 60.988
2045 60.586
2046 60.276
2047 59.928
2048 59.552
2049 59.159
2050 58.756
2051 58.455
2052 58.126
2053 57.779
2054 57.423
2055 57.067
2056 56.82
2057 56.554
2058 56.277
2059 55.998
2060 55.722
2061 55.557
2062 55.375
2063 55.184
2064 54.99
2065 54.799
2066 54.715
2067 54.611
2068 54.494
2069 54.372
2070 54.25
2071 54.221
2072 54.173
2073 54.109
2074 54.031
2075 53.942
2076 53.938
2077 53.903
2078 53.845
2079 53.77
2080 53.684
2081 53.677
2082 53.64
2083 53.58
2084 53.504
2085 53.419
2086 53.416
2087 53.386
2088 53.335
2089 53.272
2090 53.202
2091 53.221
2092 53.215
2093 53.192
2094 53.158
2095 53.119
2096 53.18
2097 53.216
2098 53.235
2099 53.241
2100 53.24