| Year | Value | | 2023 | 3,648,467 | | 2022 | 3,665,506 | | 2021 | 3,565,038 | | 2020 | 3,147,433 | | 2019 | 3,472,371 | | 2018 | 3,386,367 | | 2017 | 3,400,703 | | 2016 | 3,280,153 | | 2015 | 3,006,841 | | 2014 | 2,703,769 | | 2013 | 2,671,424 | | 2012 | 2,612,517 | | 2011 | 2,502,546 | | 2010 | 2,496,816 | | 2009 | 2,524,923 | | 2008 | 2,584,629 | | 2007 | 2,521,159 | | 2006 | 2,497,190 | | 2005 | 2,401,867 | | 2004 | 2,381,673 | | 2003 | 2,167,529 | | 2002 | 2,068,605 | | 2001 | 1,973,652 | | 2000 | 1,882,866 | | 1999 | 1,957,529 | | 1998 | 2,027,027 | | 1997 | 1,859,883 | | 1996 | 1,800,271 | | 1995 | 1,758,954 | | 1994 | 1,715,072 | | 1993 | 1,660,677 | | 1992 | 1,619,201 | | 1991 | 1,575,723 |
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