| Year | Value | | 2024 | 81,418 | | 2023 | 73,812 | | 2022 | 69,786 | | 2021 | 63,113 | | 2020 | 68,135 | | 2019 | 60,583 | | 2018 | 54,834 | | 2017 | 50,468 | | 2016 | 46,969 | | 2015 | 44,235 | | 2014 | 41,585 | | 2013 | 37,373 | | 2012 | 32,481 | | 2011 | 29,305 | | 2010 | 28,178 | | 2009 | 27,232 | | 2008 | 24,079 | | 2007 | 21,946 | | 2006 | 20,755 | | 2005 | 20,096 | | 2004 | 19,098 | | 2003 | 18,047 | | 2002 | 17,168 | | 2001 | 16,321 | | 2000 | 15,490 | | 1999 | 14,654 | | 1998 | 13,794 | | 1997 | 12,866 | | 1996 | 11,785 | | 1995 | 10,722 | | 1994 | 9,870 | | 1993 | 9,176 | | 1992 | 8,593 | | 1991 | 8,083 | | 1990 | 7,608 | | 1989 | 7,144 | | 1988 | 6,705 | | 1987 | 6,291 | | 1986 | 5,869 | | 1985 | 5,378 | | 1984 | 4,893 | | 1983 | 4,503 | | 1982 | 4,186 | | 1981 | 3,932 | | 1980 | 3,728 | | 1979 | 3,550 | | 1978 | 3,388 | | 1977 | 3,238 | | 1976 | 3,097 | | 1975 | 2,967 |
|