| Year | Value | | 2021 | 12,033,941 | | 2020 | 11,804,343 | | 2019 | 11,688,830 | | 2018 | 11,445,830 | | 2017 | 10,963,224 | | 2016 | 10,106,216 | | 2015 | 10,162,829 | | 2014 | 10,450,341 | | 2013 | 10,425,704 | | 2012 | 9,493,207 | | 2011 | 8,353,273 | | 2010 | 7,179,293 | | 2009 | 6,464,390 | | 2008 | 5,038,600 | | 2007 | 3,254,410 | | 2006 | 2,876,143 | | 2005 | 2,421,402 | | 2004 | 1,800,789 | | 2003 | 1,278,844 | | 2002 | 1,023,333 | | 2001 | 779,917 | | 2000 | 582,620 | | 1999 | 420,344 | | 1998 | 239,272 | | 1997 | 118,433 | | 1996 | 33,400 | | 1995 | 7,229 | | 1994 | 4,056 | | 1993 | 2,659 | | 1992 | 1,551 | | 1991 | 295 |
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