| Year | Value | | 2022 | 12,792,302 | | 2021 | 12,445,113 | | 2020 | 11,851,054 | | 2019 | 11,909,751 | | 2018 | 11,859,548 | | 2017 | 11,764,106 | | 2016 | 11,572,085 | | 2015 | 11,714,693 | | 2014 | 11,895,627 | | 2013 | 11,990,993 | | 2012 | 11,917,565 | | 2011 | 12,334,595 | | 2010 | 12,210,377 | | 2009 | 11,795,080 | | 2008 | 14,049,187 | | 2007 | 13,477,414 | | 2006 | 12,226,439 | | 2005 | 11,447,313 | | 2004 | 10,571,100 | | 2003 | 10,002,705 | | 2002 | 8,670,000 | | 2001 | 7,977,537 | | 2000 | 6,664,951 | | 1999 | 4,671,458 | | 1998 | 3,074,633 | | 1997 | 1,506,958 | | 1996 | 663,651 | | 1995 | 340,845 | | 1994 | 173,508 | | 1993 | 101,300 | | 1992 | 37,262 | | 1991 | 12,600 | | 1990 | 6,500 | | 1989 | 2,782 |
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