| Year | Value | | 2022 | 16,085 | | 2021 | 15,539 | | 2020 | 14,884 | | 2019 | 14,079 | | 2018 | 13,196 | | 2017 | 12,314 | | 2016 | 11,544 | | 2015 | 10,818 | | 2014 | 10,148 | | 2013 | 9,519 | | 2012 | 8,939 | | 2011 | 8,416 | | 2010 | 7,944 | | 2009 | 7,509 | | 2008 | 7,103 | | 2007 | 6,737 | | 2006 | 6,409 | | 2005 | 6,073 | | 2004 | 5,740 | | 2003 | 5,402 | | 2002 | 5,055 | | 2001 | 4,730 | | 2000 | 4,461 | | 1999 | 4,230 | | 1998 | 4,024 | | 1997 | 3,857 | | 1996 | 3,651 | | 1995 | 3,470 | | 1994 | 3,306 | | 1993 | 3,166 | | 1992 | 3,043 | | 1991 | 2,929 | | 1990 | 2,819 |
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