| Year | Value | | 2022 | 33,601 | | 2021 | 32,110 | | 2020 | 30,710 | | 2019 | 29,278 | | 2018 | 27,921 | | 2017 | 26,880 | | 2016 | 26,151 | | 2015 | 25,320 | | 2014 | 24,537 | | 2013 | 23,749 | | 2012 | 22,757 | | 2011 | 21,691 | | 2010 | 20,739 | | 2009 | 19,874 | | 2008 | 19,087 | | 2007 | 18,417 | | 2006 | 17,822 | | 2005 | 17,158 | | 2004 | 16,446 | | 2003 | 15,683 | | 2002 | 14,864 | | 2001 | 14,084 | | 2000 | 13,390 | | 1999 | 12,732 | | 1998 | 12,075 | | 1997 | 11,444 | | 1996 | 10,658 | | 1995 | 9,949 | | 1994 | 9,310 | | 1993 | 8,754 | | 1992 | 8,268 | | 1991 | 7,831 | | 1990 | 7,441 |
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