| Year | Value | | 2022 | 10,371,597 | | 2021 | 10,382,460 | | 2020 | 10,332,660 | | 2019 | 10,272,694 | | 2018 | 10,041,939 | | 2017 | 9,945,037 | | 2016 | 9,952,001 | | 2015 | 9,900,582 | | 2014 | 11,726,491 | | 2013 | 11,590,326 | | 2012 | 11,579,425 | | 2011 | 11,689,937 | | 2010 | 12,011,823 | | 2009 | 11,792,475 | | 2008 | 12,224,163 | | 2007 | 11,029,930 | | 2006 | 9,965,720 | | 2005 | 9,320,000 | | 2004 | 8,727,188 | | 2003 | 7,944,586 | | 2002 | 6,886,111 | | 2001 | 4,967,430 | | 2000 | 3,076,279 | | 1999 | 1,628,153 | | 1998 | 1,070,154 | | 1997 | 705,786 | | 1996 | 473,100 | | 1995 | 265,000 | | 1994 | 143,000 | | 1993 | 45,712 | | 1992 | 23,292 | | 1991 | 8,477 | | 1990 | 2,645 |
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