| Year | Value | | 2024 | 71,372 | | 2023 | 67,041 | | 2022 | 69,257 | | 2021 | 67,952 | | 2020 | 76,218 | | 2019 | 69,178 | | 2018 | 66,345 | | 2017 | 65,875 | | 2016 | 63,920 | | 2015 | 60,202 | | 2014 | 56,661 | | 2013 | 52,369 | | 2012 | 47,310 | | 2011 | 43,576 | | 2010 | 42,287 | | 2009 | 41,846 | | 2008 | 37,791 | | 2007 | 35,082 | | 2006 | 33,888 | | 2005 | 31,722 | | 2004 | 28,875 | | 2003 | 27,735 | | 2002 | 27,260 | | 2001 | 26,585 | | 2000 | 25,801 | | 1999 | 25,014 | | 1998 | 24,279 | | 1997 | 23,687 | | 1996 | 23,465 | | 1995 | 23,438 | | 1994 | 23,308 | | 1993 | 23,111 | | 1992 | 22,873 | | 1991 | 22,583 | | 1990 | 22,076 | | 1989 | 21,374 | | 1988 | 20,675 | | 1987 | 19,994 | | 1986 | 19,352 | | 1985 | 18,932 | | 1984 | 18,567 | | 1983 | 17,957 | | 1982 | 17,186 | | 1981 | 16,376 | | 1980 | 15,609 | | 1979 | 14,916 | | 1978 | 14,292 | | 1977 | 13,728 | | 1976 | 13,216 | | 1975 | 12,756 |
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