| Year | Value | | 2024 | 6,680 | | 2023 | 5,827 | | 2022 | 5,061 | | 2021 | 4,433 | | 2020 | 4,940 | | 2019 | 4,609 | | 2018 | 4,390 | | 2017 | 4,169 | | 2016 | 3,923 | | 2015 | 3,502 | | 2014 | 3,101 | | 2013 | 2,902 | | 2012 | 2,622 | | 2011 | 2,290 | | 2010 | 2,131 | | 2009 | 2,222 | | 2008 | 2,283 | | 2007 | 2,248 | | 2006 | 2,027 | | 2005 | 1,758 | | 2004 | 1,624 | | 2003 | 1,596 | | 2002 | 1,531 | | 2001 | 1,432 | | 2000 | 1,335 | | 1999 | 1,258 | | 1998 | 1,203 | | 1997 | 1,161 | | 1996 | 1,133 | | 1995 | 1,102 | | 1994 | 1,051 | | 1993 | 988 | | 1992 | 918 | | 1991 | 847 | | 1990 | 777 | | 1989 | 714 | | 1988 | 655 | | 1987 | 601 | | 1986 | 555 | | 1985 | 539 | | 1984 | 549 | | 1983 | 558 | | 1982 | 562 | | 1981 | 564 | | 1980 | 566 | | 1979 | 565 | | 1978 | 559 | | 1977 | 549 | | 1976 | 533 | | 1975 | 517 |
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