| Year | Value | | 2022 | 3,811,931 | | 2021 | 3,728,775 | | 2020 | 3,509,674 | | 2019 | 3,755,521 | | 2018 | 3,461,058 | | 2017 | 3,440,085 | | 2016 | 3,404,043 | | 2015 | 3,443,520 | | 2014 | 3,491,188 | | 2013 | 3,488,319 | | 2012 | 3,357,541 | | 2011 | 3,171,283 | | 2010 | 3,110,233 | | 2009 | 3,257,239 | | 2008 | 3,179,036 | | 2007 | 2,450,425 | | 2006 | 1,887,820 | | 2005 | 1,594,367 | | 2004 | 1,407,441 | | 2003 | 1,074,790 | | 2002 | 748,780 | | 2001 | 444,711 | | 2000 | 93,386 | | 1999 | 52,607 | | 1998 | 25,181 | | 1997 | 9,000 | | 1996 | 1,500 |
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