| Year | Value | | 2022 | 19,838,000 | | 2021 | 20,247,111 | | 2020 | 19,104,208 | | 2019 | 17,220,607 | | 2018 | 15,470,270 | | 2017 | 13,438,539 | | 2016 | 12,017,034 | | 2015 | 11,557,725 | | 2014 | 10,114,867 | | 2013 | 10,395,801 | | 2012 | 10,524,676 | | 2011 | 8,164,553 | | 2010 | 5,446,991 | | 2009 | 4,406,682 | | 2008 | 3,539,003 | | 2007 | 2,639,026 | | 2006 | 1,663,328 | | 2005 | 949,559 | | 2004 | 464,354 | | 2003 | 241,000 | | 2002 | 139,092 | | 2001 | 121,200 | | 2000 | 98,853 | | 1999 | 28,190 | | 1998 | 8,260 | | 1997 | 4,550 | | 1996 | 2,721 | | 1995 | 1,547 |
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