| Year | Value | | 2022 | 49,018,766 | | 2021 | 47,015,757 | | 2020 | 45,555,673 | | 2019 | 45,425,533 | | 2018 | 47,154,264 | | 2017 | 45,845,665 | | 2016 | 47,041,321 | | 2015 | 43,227,643 | | 2014 | 43,298,174 | | 2013 | 39,517,045 | | 2012 | 37,527,703 | | 2011 | 35,615,926 | | 2010 | 32,780,165 | | 2009 | 32,729,824 | | 2008 | 27,031,472 | | 2007 | 27,562,721 | | 2006 | 20,997,954 | | 2005 | 13,661,355 | | 2004 | 4,882,414 | | 2003 | 1,446,927 | | 2002 | 450,244 | | 2001 | 100,000 | | 2000 | 86,000 | | 1999 | 72,000 | | 1998 | 18,000 | | 1997 | 17,400 | | 1996 | 11,700 | | 1995 | 4,691 | | 1994 | 1,348 | | 1993 | 4,781 | | 1992 | 4,781 | | 1991 | 4,781 | | 1990 | 470 |
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