| Year | Value | | 2023 | 3,478,849 | | 2022 | 3,539,095 | | 2021 | 3,446,024 | | 2020 | 3,833,478 | | 2019 | 3,870,929 | | 2018 | 3,898,178 | | 2017 | 3,944,453 | | 2016 | 3,845,904 | | 2015 | 3,939,516 | | 2014 | 4,038,396 | | 2013 | 4,032,804 | | 2012 | 4,065,970 | | 2011 | 4,069,331 | | 2010 | 4,098,694 | | 2009 | 4,164,589 | | 2008 | 4,216,191 | | 2007 | 4,346,956 | | 2006 | 4,444,257 | | 2005 | 4,372,939 | | 2004 | 4,553,583 | | 2003 | 4,586,896 | | 2002 | 4,793,724 | | 2001 | 5,392,091 | | 2000 | 5,532,953 | | 1999 | 5,550,959 | | 1998 | 5,523,178 | | 1997 | 5,607,708 | | 1996 | 5,378,591 | | 1995 | 5,639,001 | | 1994 | 5,623,966 | | 1993 | 5,600,211 | | 1992 | 5,566,813 | | 1991 | 5,547,457 |
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