| Year | Value | | 2022 | 17,490,751 | | 2021 | 16,789,600 | | 2020 | 15,485,366 | | 2019 | 15,853,100 | | 2018 | 15,772,838 | | 2017 | 14,651,404 | | 2016 | 13,882,280 | | 2015 | 12,943,791 | | 2014 | 16,605,737 | | 2013 | 16,626,199 | | 2012 | 16,456,740 | | 2011 | 15,332,715 | | 2010 | 14,780,730 | | 2009 | 13,241,758 | | 2008 | 11,684,479 | | 2007 | 9,939,977 | | 2006 | 8,485,050 | | 2005 | 6,246,332 | | 2004 | 3,544,174 | | 2003 | 2,398,161 | | 2002 | 1,560,861 | | 2001 | 859,152 | | 2000 | 482,213 | | 1999 | 383,185 | | 1998 | 242,812 | | 1997 | 126,505 | | 1996 | 59,779 | | 1995 | 54,380 | | 1994 | 18,920 |
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