| Year | Value | | 2024 | 54,792 | | 2023 | 48,796 | | 2022 | 45,147 | | 2021 | 40,735 | | 2020 | 43,750 | | 2019 | 38,399 | | 2018 | 35,233 | | 2017 | 33,199 | | 2016 | 31,351 | | 2015 | 29,598 | | 2014 | 27,836 | | 2013 | 25,260 | | 2012 | 22,386 | | 2011 | 20,654 | | 2010 | 20,188 | | 2009 | 19,599 | | 2008 | 17,424 | | 2007 | 16,395 | | 2006 | 15,432 | | 2005 | 13,886 | | 2004 | 12,585 | | 2003 | 11,770 | | 2002 | 11,038 | | 2001 | 10,322 | | 2000 | 9,603 | | 1999 | 8,882 | | 1998 | 8,169 | | 1997 | 7,495 | | 1996 | 6,910 | | 1995 | 6,425 | | 1994 | 6,005 | | 1993 | 5,632 | | 1992 | 5,296 | | 1991 | 4,984 | | 1990 | 4,686 | | 1989 | 4,405 | | 1988 | 4,143 | | 1987 | 3,891 | | 1986 | 3,652 | | 1985 | 3,425 | | 1984 | 3,217 | | 1983 | 3,036 | | 1982 | 2,873 | | 1981 | 2,724 | | 1980 | 2,589 | | 1979 | 2,470 | | 1978 | 2,365 | | 1977 | 2,271 | | 1976 | 2,185 | | 1975 | 2,100 |
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