Year | Value | 2022 | 146,760 | 2021 | 145,021 | 2020 | 141,926 | 2019 | 138,264 | 2018 | 135,398 | 2017 | 133,999 | 2016 | 133,928 | 2015 | 134,248 | 2014 | 133,871 | 2013 | 132,081 | 2012 | 128,555 | 2011 | 123,488 | 2010 | 117,315 | 2009 | 110,487 | 2008 | 103,622 | 2007 | 97,237 | 2006 | 91,519 | 2005 | 86,340 | 2004 | 81,422 | 2003 | 76,590 | 2002 | 71,424 | 2001 | 65,539 | 2000 | 59,182 | 1999 | 52,890 | 1998 | 47,445 | 1997 | 44,040 | 1996 | 43,464 | 1995 | 45,347 | 1994 | 48,895 | 1993 | 53,043 | 1992 | 56,393 | 1991 | 58,065 | 1990 | 57,964 | 1989 | 56,537 | 1988 | 54,996 | 1987 | 53,821 | 1986 | 52,923 | 1985 | 52,713 | 1984 | 53,057 | 1983 | 53,914 | 1982 | 54,925 | 1981 | 55,052 | 1980 | 53,605 | 1979 | 50,599 | 1978 | 46,140 | 1977 | 40,794 | 1976 | 35,780 | 1975 | 31,846 | 1974 | 28,788 | 1973 | 26,464 | 1972 | 24,988 | 1971 | 24,141 | 1970 | 23,802 | 1969 | 24,082 | 1968 | 25,090 | 1967 | 26,542 | 1966 | 27,895 | 1965 | 28,838 | 1964 | 29,411 | 1963 | 29,573 | 1962 | 29,393 | 1961 | 29,220 | 1960 | 29,236 |
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