| Year | Value | | 2023 | 4,445,313 | | 2022 | 4,359,803 | | 2021 | 4,136,323 | | 2020 | 4,087,964 | | 2019 | 4,240,681 | | 2018 | 4,204,927 | | 2017 | 4,178,516 | | 2016 | 4,162,572 | | 2015 | 4,121,291 | | 2014 | 4,103,893 | | 2013 | 4,084,374 | | 2012 | 4,077,364 | | 2011 | 3,974,997 | | 2010 | 3,892,730 | | 2009 | 3,810,664 | | 2008 | 3,729,378 | | 2007 | 3,648,430 | | 2006 | 3,572,996 | | 2005 | 3,502,286 | | 2004 | 3,468,620 | | 2003 | 3,428,609 | | 2002 | 3,382,757 | | 2001 | 3,332,508 | | 2000 | 3,279,579 | | 1999 | 3,225,286 | | 1998 | 3,170,401 | | 1997 | 3,115,089 | | 1996 | 3,030,225 | | 1995 | 2,946,813 | | 1994 | 2,862,078 | | 1993 | 2,774,784 | | 1992 | 2,684,017 | | 1991 | 2,609,546 |
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