| Year | Value | | 2023 | 6,668,172 | | 2022 | 6,588,824 | | 2021 | 6,462,165 | | 2020 | 6,491,560 | | 2019 | 6,479,503 | | 2018 | 6,404,956 | | 2017 | 6,328,526 | | 2016 | 6,244,154 | | 2015 | 6,155,854 | | 2014 | 6,066,398 | | 2013 | 5,973,682 | | 2012 | 5,879,032 | | 2011 | 5,782,838 | | 2010 | 5,685,095 | | 2009 | 5,298,911 | | 2008 | 4,557,619 | | 2007 | 3,769,133 | | 2006 | 3,097,126 | | 2005 | 2,671,414 | | 2004 | 2,458,656 | | 2003 | 2,309,920 | | 2002 | 2,166,348 | | 2001 | 2,027,836 | | 2000 | 1,895,208 | | 1999 | 1,770,008 | | 1998 | 1,652,502 | | 1997 | 1,544,100 | | 1996 | 1,446,534 | | 1995 | 1,359,004 | | 1994 | 1,279,952 | | 1993 | 1,203,148 | | 1992 | 1,124,933 | | 1991 | 1,051,322 |
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