| Year | Value | | 2023 | 9,323,878 | | 2022 | 9,146,158 | | 2021 | 9,013,780 | | 2020 | 8,227,198 | | 2019 | 8,732,636 | | 2018 | 8,472,658 | | 2017 | 8,114,495 | | 2016 | 8,000,982 | | 2015 | 7,888,897 | | 2014 | 7,776,756 | | 2013 | 7,713,257 | | 2012 | 7,676,960 | | 2011 | 7,556,566 | | 2010 | 7,411,878 | | 2009 | 7,540,883 | | 2008 | 7,329,662 | | 2007 | 7,358,416 | | 2006 | 7,384,641 | | 2005 | 7,190,770 | | 2004 | 7,218,620 | | 2003 | 6,922,224 | | 2002 | 6,636,291 | | 2001 | 6,855,153 | | 2000 | 6,893,901 | | 1999 | 6,839,624 | | 1998 | 6,848,590 | | 1997 | 6,682,463 | | 1996 | 6,423,625 | | 1995 | 6,225,530 | | 1994 | 6,218,092 | | 1993 | 6,016,663 | | 1992 | 5,771,288 | | 1991 | 5,539,675 |
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