| Year | Value | | 2022 | 13,637 | | 2021 | 13,144 | | 2020 | 12,664 | | 2019 | 12,143 | | 2018 | 11,635 | | 2017 | 11,215 | | 2016 | 10,873 | | 2015 | 10,461 | | 2014 | 10,031 | | 2013 | 9,562 | | 2012 | 9,042 | | 2011 | 8,524 | | 2010 | 8,029 | | 2009 | 7,544 | | 2008 | 7,068 | | 2007 | 6,598 | | 2006 | 6,163 | | 2005 | 5,759 | | 2004 | 5,384 | | 2003 | 5,051 | | 2002 | 4,758 | | 2001 | 4,502 | | 2000 | 4,289 | | 1999 | 4,106 | | 1998 | 3,940 | | 1997 | 3,800 | | 1996 | 3,615 | | 1995 | 3,445 | | 1994 | 3,290 | | 1993 | 3,151 | | 1992 | 3,026 | | 1991 | 2,915 | | 1990 | 2,820 |
|