Year Number
1950 81.567
1951 82.768
1952 84.466
1953 85.922
1954 86.923
1955 87.603
1956 89.545
1957 90.646
1958 91.406
1959 92.249
1960 93.303
1961 94.205
1962 95.481
1963 96.753
1964 97.439
1965 97.264
1966 97.327
1967 96.579
1968 95.28
1969 93.912
1970 92.758
1971 91.845
1972 91.251
1973 90.749
1974 89.741
1975 87.767
1976 86.353
1977 83.877
1978 80.875
1979 78.567
1980 77.914
1981 76.432
1982 77.321
1983 79.592
1984 81.609
1985 82.593
1986 85.772
1987 86.649
1988 86.524
1989 87.185
1990 89.32
1991 90.708
1992 93.393
1993 96.42
1994 98.222
1995 98.049
1996 97.312
1997 94.561
1998 90.23
1999 85.378
2000 80.757
2001 76.989
2002 74.087
2003 71.872
2004 69.925
2005 67.938
2006 65.841
2007 63.822
2008 61.892
2009 60.209
2010 58.88
2011 58.017
2012 57.113
2013 56.331
2014 55.809
2015 55.57
2016 55.409
2017 55.545
2018 55.816
2019 55.98
2020 55.913
2021 55.738
2022 55.339
2023 54.798
2024 54.264
2025 53.814
2026 53.374
2027 53.021
2028 52.705
2029 52.356
2030 51.951
2031 51.563
2032 51.129
2033 50.692
2034 50.316
2035 50.032
2036 49.863
2037 49.811
2038 49.778
2039 49.606
2040 49.225
2041 48.66
2042 47.869
2043 47.115
2044 46.755
2045 46.972
2046 47.68
2047 48.935
2048 50.461
2049 51.823
2050 52.76
2051 53.287
2052 53.423
2053 53.353
2054 53.37
2055 53.638
2056 54.053
2057 54.666
2058 55.397
2059 56.116
2060 56.746
2061 57.253
2062 57.704
2063 58.112
2064 58.485
2065 58.82
2066 59.014
2067 59.182
2068 59.328
2069 59.51
2070 59.794
2071 60.069
2072 60.389
2073 60.83
2074 61.363
2075 61.918
2076 62.393
2077 62.922
2078 63.511
2079 64.075
2080 64.65
2081 65.21
2082 65.761
2083 66.354
2084 67.006
2085 67.669
2086 68.14
2087 68.655
2088 69.179
2089 69.686
2090 70.187
2091 70.559
2092 70.948
2093 71.368
2094 71.834
2095 72.348
2096 72.714
2097 73.131
2098 73.591
2099 74.105
2100 74.689