Year | Value | 2023 | 51,575 | 2022 | 50,966 | 2021 | 50,242 | 2020 | 49,208 | 2019 | 47,880 | 2018 | 46,340 | 2017 | 44,673 | 2016 | 42,905 | 2015 | 41,101 | 2014 | 39,332 | 2013 | 37,653 | 2012 | 36,127 | 2011 | 34,798 | 2010 | 33,665 | 2009 | 32,693 | 2008 | 31,850 | 2007 | 31,109 | 2006 | 30,461 | 2005 | 29,895 | 2004 | 29,366 | 2003 | 28,750 | 2002 | 28,090 | 2001 | 27,463 | 2000 | 26,738 | 1999 | 25,890 | 1998 | 25,071 | 1997 | 24,266 | 1996 | 23,347 | 1995 | 22,346 | 1994 | 21,317 | 1993 | 20,296 | 1992 | 19,354 | 1991 | 18,545 | 1990 | 17,813 | 1989 | 16,745 | 1988 | 15,752 | 1987 | 15,272 | 1986 | 14,927 | 1985 | 14,691 | 1984 | 14,570 | 1983 | 14,555 | 1982 | 14,586 | 1981 | 14,679 | 1980 | 14,756 | 1979 | 14,651 | 1978 | 14,485 | 1977 | 14,245 | 1976 | 13,937 | 1975 | 13,705 | 1974 | 13,525 |
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