| Year | Value | | 2023 | 5,722,443 | | 2022 | 5,510,923 | | 2021 | 5,311,768 | | 2020 | 5,116,723 | | 2019 | 4,993,362 | | 2018 | 4,804,276 | | 2017 | 4,644,906 | | 2016 | 4,554,341 | | 2015 | 4,526,075 | | 2014 | 4,460,707 | | 2013 | 4,334,934 | | 2012 | 4,201,862 | | 2011 | 4,072,769 | | 2010 | 3,944,226 | | 2009 | 3,754,411 | | 2008 | 3,541,156 | | 2007 | 3,376,426 | | 2006 | 3,237,210 | | 2005 | 3,150,340 | | 2004 | 3,048,521 | | 2003 | 2,937,179 | | 2002 | 2,848,684 | | 2001 | 2,770,594 | | 2000 | 2,701,303 | | 1999 | 2,648,179 | | 1998 | 2,574,722 | | 1997 | 2,527,375 | | 1996 | 2,575,028 | | 1995 | 2,628,505 | | 1994 | 2,394,789 | | 1993 | 2,410,298 | | 1992 | 2,622,016 | | 1991 | 2,568,641 |
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