| Year | Value | | 2023 | 7,549,275 | | 2022 | 7,306,664 | | 2021 | 7,243,321 | | 2020 | 6,847,703 | | 2019 | 6,608,922 | | 2018 | 6,396,991 | | 2017 | 6,190,412 | | 2016 | 5,987,605 | | 2015 | 5,792,786 | | 2014 | 5,605,929 | | 2013 | 5,422,755 | | 2012 | 5,242,967 | | 2011 | 5,067,437 | | 2010 | 4,931,915 | | 2009 | 4,753,841 | | 2008 | 4,584,547 | | 2007 | 4,421,068 | | 2006 | 4,262,757 | | 2005 | 4,110,889 | | 2004 | 3,962,485 | | 2003 | 3,819,466 | | 2002 | 3,683,275 | | 2001 | 3,552,809 | | 2000 | 3,428,452 | | 1999 | 3,308,512 | | 1998 | 3,193,913 | | 1997 | 3,084,042 | | 1996 | 2,979,145 | | 1995 | 2,880,062 | | 1994 | 2,783,860 | | 1993 | 2,692,506 | | 1992 | 2,606,760 | | 1991 | 2,524,712 |
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