| Year | Value | | 2023 | 11,819,973 | | 2022 | 11,361,703 | | 2021 | 10,986,957 | | 2020 | 10,674,863 | | 2019 | 11,281,954 | | 2018 | 11,079,598 | | 2017 | 11,098,432 | | 2016 | 10,808,324 | | 2015 | 10,689,540 | | 2014 | 10,198,193 | | 2013 | 10,113,919 | | 2012 | 9,893,493 | | 2011 | 9,854,452 | | 2010 | 9,188,135 | | 2009 | 9,875,855 | | 2008 | 9,991,153 | | 2007 | 9,839,458 | | 2006 | 9,682,314 | | 2005 | 9,517,918 | | 2004 | 9,336,924 | | 2003 | 9,138,997 | | 2002 | 8,929,977 | | 2001 | 8,719,119 | | 2000 | 8,517,495 | | 1999 | 8,316,463 | | 1998 | 8,119,005 | | 1997 | 7,923,631 | | 1996 | 7,699,804 | | 1995 | 7,446,523 | | 1994 | 7,205,651 | | 1993 | 6,985,082 | | 1992 | 6,783,376 | | 1991 | 6,629,899 |
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