| Year | Value | | 2023 | 14,887,115 | | 2022 | 14,549,322 | | 2021 | 14,064,388 | | 2020 | 13,730,721 | | 2019 | 13,512,595 | | 2018 | 13,189,616 | | 2017 | 12,867,254 | | 2016 | 12,541,094 | | 2015 | 12,224,092 | | 2014 | 11,979,984 | | 2013 | 11,743,140 | | 2012 | 11,512,114 | | 2011 | 11,285,674 | | 2010 | 11,061,367 | | 2009 | 10,827,195 | | 2008 | 10,577,661 | | 2007 | 10,319,874 | | 2006 | 10,059,045 | | 2005 | 9,799,107 | | 2004 | 9,537,156 | | 2003 | 9,271,299 | | 2002 | 9,000,790 | | 2001 | 8,727,477 | | 2000 | 8,469,005 | | 1999 | 8,228,398 | | 1998 | 7,986,401 | | 1997 | 7,743,786 | | 1996 | 7,518,901 | | 1995 | 7,309,646 | | 1994 | 7,108,592 | | 1993 | 6,915,425 | | 1992 | 6,728,212 | | 1991 | 6,558,143 |
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