| Year | Value | | 2022 | 588,593 | | 2021 | 590,171 | | 2020 | 544,729 | | 2019 | 595,681 | | 2018 | 610,328 | | 2017 | 612,259 | | 2016 | 601,956 | | 2015 | 611,468 | | 2014 | 613,378 | | 2013 | 499,458 | | 2012 | 425,310 | | 2011 | 396,429 | | 2010 | 371,871 | | 2009 | 290,621 | | 2008 | 277,670 | | 2007 | 152,212 | | 2006 | 108,858 | | 2005 | 81,721 | | 2004 | 65,780 | | 2003 | 53,342 | | 2002 | 42,949 | | 2001 | 31,507 | | 2000 | 19,729 | | 1999 | 8,068 | | 1998 | 1,020 | | 1997 | 20 |
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