| Year | Value | | 2022 | 13,475,347 | | 2021 | 13,286,894 | | 2020 | 12,999,812 | | 2019 | 13,101,360 | | 2018 | 12,704,262 | | 2017 | 12,636,359 | | 2016 | 12,485,045 | | 2015 | 12,454,575.01 | | 2014 | 13,913,100 | | 2013 | 13,719,300 | | 2012 | 13,521,900 | | 2011 | 13,167,700 | | 2010 | 12,934,100 | | 2009 | 13,062,617 | | 2008 | 13,780,165 | | 2007 | 13,228,631 | | 2006 | 12,406,199 | | 2005 | 11,775,878 | | 2004 | 10,782,567 | | 2003 | 9,708,683 | | 2002 | 8,610,177 | | 2001 | 6,947,151 | | 2000 | 4,346,009 | | 1999 | 1,944,553 | | 1998 | 965,476 | | 1997 | 526,339 | | 1996 | 200,315 | | 1995 | 48,900 | | 1994 | 30,429 | | 1993 | 14,043 | | 1992 | 4,651 | | 1991 | 1,242 |
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