Year Number
1950 48.67
1951 49.397
1952 50.39
1953 51.076
1954 51.346
1955 51.322
1956 52.068
1957 52.229
1958 52.161
1959 52.145
1960 52.247
1961 51.887
1962 51.728
1963 51.621
1964 51.362
1965 50.893
1966 50.294
1967 49.726
1968 49.157
1969 48.585
1970 48.041
1971 48.186
1972 48.067
1973 47.946
1974 48.185
1975 48.941
1976 49.927
1977 51.557
1978 53.425
1979 54.8
1980 55.244
1981 55.485
1982 54.557
1983 53.004
1984 51.685
1985 51.027
1986 50.443
1987 50.724
1988 51.38
1989 51.678
1990 51.287
1991 51.303
1992 50.596
1993 49.502
1994 48.521
1995 47.869
1996 47.576
1997 47.435
1998 47.38
1999 47.253
2000 46.984
2001 46.625
2002 46.302
2003 45.988
2004 45.675
2005 45.376
2006 45.429
2007 45.459
2008 45.492
2009 45.565
2010 45.698
2011 46.043
2012 46.359
2013 46.725
2014 47.223
2015 47.878
2016 48.698
2017 49.721
2018 50.818
2019 51.808
2020 52.597
2021 53.451
2022 54.089
2023 54.532
2024 54.824
2025 54.984
2026 55.073
2027 55.035
2028 54.927
2029 54.826
2030 54.788
2031 54.931
2032 55.146
2033 55.428
2034 55.761
2035 56.135
2036 56.654
2037 57.214
2038 57.855
2039 58.648
2040 59.64
2041 60.963
2042 62.488
2043 64.106
2044 65.613
2045 66.859
2046 67.952
2047 68.781
2048 69.421
2049 70.004
2050 70.618
2051 71.314
2052 72.029
2053 72.738
2054 73.41
2055 74.036
2056 74.641
2057 75.207
2058 75.702
2059 76.065
2060 76.246
2061 76.227
2062 76.042
2063 75.731
2064 75.369
2065 75.013
2066 74.696
2067 74.39
2068 74.13
2069 73.926
2070 73.759
2071 73.681
2072 73.722
2073 73.809
2074 73.868
2075 73.886
2076 73.943
2077 73.969
2078 74.009
2079 74.108
2080 74.268
2081 74.428
2082 74.662
2083 74.947
2084 75.244
2085 75.528
2086 75.756
2087 76.013
2088 76.276
2089 76.527
2090 76.769
2091 76.921
2092 77.07
2093 77.223
2094 77.387
2095 77.556
2096 77.574
2097 77.618
2098 77.688
2099 77.774
2100 77.866