| Year | Value | | 2022 | 323,482 | | 2021 | 316,633 | | 2020 | 295,000 | | 2019 | 329,326 | | 2018 | 329,326 | | 2017 | 329,565 | | 2016 | 332,208 | | 2015 | 334,792 | | 2014 | 305,456 | | 2013 | 307,708 | | 2012 | 349,296 | | 2011 | 347,917 | | 2010 | 350,061 | | 2009 | 337,061 | | 2008 | 288,662 | | 2007 | 257,596 | | 2006 | 237,119 | | 2005 | 206,190 | | 2004 | 200,138 | | 2003 | 140,000 | | 2002 | 97,193 | | 2001 | 53,111 | | 2000 | 28,467 | | 1999 | 20,309 | | 1998 | 12,000 | | 1997 | 8,013 | | 1996 | 6,283 | | 1995 | 4,614 | | 1994 | 2,967 | | 1993 | 1,560 | | 1992 | 796 | | 1991 | 486 |
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