| Year | Value | | 2024 | 34,451 | | 2023 | 31,355 | | 2022 | 29,428 | | 2021 | 27,071 | | 2020 | 28,781 | | 2019 | 24,640 | | 2018 | 22,826 | | 2017 | 22,006 | | 2016 | 20,859 | | 2015 | 19,468 | | 2014 | 18,335 | | 2013 | 16,812 | | 2012 | 15,015 | | 2011 | 13,874 | | 2010 | 13,447 | | 2009 | 12,727 | | 2008 | 11,012 | | 2007 | 10,138 | | 2006 | 9,284 | | 2005 | 8,268 | | 2004 | 7,533 | | 2003 | 6,998 | | 2002 | 6,433 | | 2001 | 5,895 | | 2000 | 5,403 | | 1999 | 4,973 | | 1998 | 4,605 | | 1997 | 4,290 | | 1996 | 4,039 | | 1995 | 3,833 | | 1994 | 3,640 | | 1993 | 3,459 | | 1992 | 3,286 | | 1991 | 3,124 | | 1990 | 2,973 | | 1989 | 2,822 | | 1988 | 2,666 | | 1987 | 2,505 | | 1986 | 2,340 | | 1985 | 2,194 | | 1984 | 2,077 | | 1983 | 1,977 | | 1982 | 1,893 | | 1981 | 1,820 | | 1980 | 1,752 | | 1979 | 1,691 | | 1978 | 1,633 | | 1977 | 1,578 | | 1976 | 1,528 | | 1975 | 1,481 |
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