| Year | Value | | 2023 | 8,276,658 | | 2022 | 7,957,741 | | 2021 | 7,607,191 | | 2020 | 7,330,108 | | 2019 | 7,234,270 | | 2018 | 7,086,488 | | 2017 | 6,940,330 | | 2016 | 6,779,839 | | 2015 | 6,630,544 | | 2014 | 6,436,912 | | 2013 | 6,247,049 | | 2012 | 6,095,674 | | 2011 | 5,951,575 | | 2010 | 5,779,337 | | 2009 | 5,613,820 | | 2008 | 5,448,863 | | 2007 | 5,283,861 | | 2006 | 5,119,814 | | 2005 | 4,959,319 | | 2004 | 4,805,153 | | 2003 | 4,651,362 | | 2002 | 4,500,366 | | 2001 | 4,353,669 | | 2000 | 4,214,013 | | 1999 | 4,084,494 | | 1998 | 3,964,053 | | 1997 | 3,858,925 | | 1996 | 3,769,354 | | 1995 | 3,686,199 | | 1994 | 3,608,686 | | 1993 | 3,534,727 | | 1992 | 3,466,539 | | 1991 | 3,404,323 |
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