Year | Value | 2022 | 54,656 | 2021 | 53,101 | 2020 | 50,958 | 2019 | 48,379 | 2018 | 45,675 | 2017 | 43,009 | 2016 | 40,606 | 2015 | 38,495 | 2014 | 36,790 | 2013 | 35,772 | 2012 | 35,453 | 2011 | 35,633 | 2010 | 36,186 | 2009 | 37,126 | 2008 | 38,381 | 2007 | 39,645 | 2006 | 40,533 | 2005 | 40,969 | 2004 | 41,001 | 2003 | 40,508 | 2002 | 39,502 | 2001 | 38,311 | 2000 | 37,167 | 1999 | 36,017 | 1998 | 35,009 | 1997 | 34,274 | 1996 | 33,890 | 1995 | 33,502 | 1994 | 33,720 | 1993 | 34,479 | 1992 | 34,745 | 1991 | 34,611 | 1990 | 34,354 | 1989 | 32,752 | 1988 | 29,934 | 1987 | 27,848 | 1986 | 26,481 | 1985 | 25,320 | 1984 | 24,231 | 1983 | 23,252 | 1982 | 22,356 | 1981 | 21,549 | 1980 | 20,878 | 1979 | 20,379 | 1978 | 19,953 | 1977 | 19,516 | 1976 | 19,085 | 1975 | 18,664 | 1974 | 18,243 | 1973 | 17,818 | 1972 | 17,394 | 1971 | 16,977 | 1970 | 16,567 | 1969 | 16,169 | 1968 | 15,785 | 1967 | 15,406 | 1966 | 15,010 | 1965 | 14,582 | 1964 | 14,122 | 1963 | 13,623 | 1962 | 13,098 | 1961 | 12,585 | 1960 | 12,109 |
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