Year Number
1950 49.096
1951 48.8
1952 48.26
1953 47.551
1954 46.875
1955 46.412
1956 46.729
1957 47.063
1958 47.538
1959 48.227
1960 49.14
1961 50.061
1962 51.21
1963 52.481
1964 53.696
1965 54.759
1966 55.973
1967 56.958
1968 57.729
1969 58.307
1970 58.672
1971 59.067
1972 59.07
1973 58.764
1974 58.276
1975 57.676
1976 56.781
1977 56.031
1978 55.19
1979 53.939
1980 52.193
1981 50.715
1982 48.738
1983 46.633
1984 44.9
1985 43.788
1986 43.308
1987 43.297
1988 43.646
1989 44.105
1990 44.507
1991 45.001
1992 45.414
1993 45.725
1994 45.927
1995 46.008
1996 46.067
1997 46.069
1998 46.044
1999 46.058
2000 46.168
2001 46.835
2002 47.519
2003 48.22
2004 48.91
2005 49.545
2006 50.107
2007 50.669
2008 51.176
2009 51.557
2010 51.806
2011 51.827
2012 51.73
2013 51.619
2014 51.624
2015 51.806
2016 52.19
2017 52.756
2018 53.481
2019 54.32
2020 55.247
2021 56.28
2022 57.41
2023 58.644
2024 60.001
2025 61.496
2026 63.049
2027 64.694
2028 66.436
2029 68.247
2030 70.069
2031 71.792
2032 73.576
2033 75.279
2034 76.694
2035 77.715
2036 78.28
2037 78.468
2038 78.399
2039 78.278
2040 78.241
2041 78.079
2042 77.985
2043 78.008
2044 78.176
2045 78.493
2046 78.71
2047 79.122
2048 79.694
2049 80.363
2050 81.094
2051 81.683
2052 82.367
2053 83.108
2054 83.831
2055 84.473
2056 84.831
2057 85.138
2058 85.42
2059 85.697
2060 85.972
2061 86.083
2062 86.278
2063 86.478
2064 86.624
2065 86.731
2066 86.63
2067 86.487
2068 86.362
2069 86.301
2070 86.29
2071 85.949
2072 85.673
2073 85.47
2074 85.337
2075 85.274
2076 84.957
2077 84.767
2078 84.699
2079 84.732
2080 84.86
2081 84.807
2082 84.9
2083 85.11
2084 85.413
2085 85.807
2086 85.981
2087 86.244
2088 86.608
2089 87.067
2090 87.59
2091 87.809
2092 88.107
2093 88.461
2094 88.851
2095 89.275
2096 89.392
2097 89.552
2098 89.765
2099 90.04
2100 90.373