| Year | Value | | 2022 | 34,671,259 | | 2021 | 34,496,300 | | 2020 | 35,195,207 | | 2019 | 33,014,160 | | 2018 | 30,100,412 | | 2017 | 28,644,139 | | 2016 | 27,807,293 | | 2015 | 27,938,507 | | 2014 | 27,796,611 | | 2013 | 27,657,875 | | 2012 | 27,658,595 | | 2011 | 25,056,185 | | 2010 | 18,093,231 | | 2009 | 15,339,895 | | 2008 | 11,991,469 | | 2007 | 8,218,092 | | 2006 | 4,683,127 | | 2005 | 1,827,940 | | 2004 | 1,048,558 | | 2003 | 527,233 | | 2002 | 190,778 | | 2001 | 103,846 | | 2000 | 23,000 | | 1999 | 13,000 | | 1998 | 8,600 | | 1997 | 3,800 | | 1996 | 2,200 |
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