| Year | Value | | 2024 | 36,155 | | 2023 | 31,982 | | 2022 | 28,179 | | 2021 | 24,963 | | 2020 | 27,806 | | 2019 | 25,599 | | 2018 | 24,364 | | 2017 | 23,837 | | 2016 | 23,073 | | 2015 | 21,400 | | 2014 | 18,918 | | 2013 | 15,905 | | 2012 | 13,404 | | 2011 | 11,773 | | 2010 | 10,776 | | 2009 | 10,338 | | 2008 | 9,602 | | 2007 | 9,156 | | 2006 | 8,375 | | 2005 | 7,488 | | 2004 | 7,010 | | 2003 | 6,504 | | 2002 | 5,866 | | 2001 | 5,389 | | 2000 | 5,050 | | 1999 | 4,813 | | 1998 | 4,629 | | 1997 | 4,451 | | 1996 | 4,290 | | 1995 | 4,124 | | 1994 | 3,914 | | 1993 | 3,688 | | 1992 | 3,463 | | 1991 | 3,247 | | 1990 | 3,037 | | 1989 | 2,838 | | 1988 | 2,633 | | 1987 | 2,418 | | 1986 | 2,203 | | 1985 | 2,002 | | 1984 | 1,831 | | 1983 | 1,692 | | 1982 | 1,573 | | 1981 | 1,470 | | 1980 | 1,386 | | 1979 | 1,319 | | 1978 | 1,264 | | 1977 | 1,217 | | 1976 | 1,176 | | 1975 | 1,139 |
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