| Year | Value | | 2023 | 5,114,541 | | 2022 | 5,038,887 | | 2021 | 4,909,004 | | 2020 | 4,811,782 | | 2019 | 4,803,983 | | 2018 | 4,762,314 | | 2017 | 4,720,169 | | 2016 | 4,667,870 | | 2015 | 4,625,351 | | 2014 | 4,592,438 | | 2013 | 4,554,618 | | 2012 | 4,518,209 | | 2011 | 4,477,106 | | 2010 | 4,371,167 | | 2009 | 4,257,893 | | 2008 | 4,209,578 | | 2007 | 4,172,077 | | 2006 | 4,143,181 | | 2005 | 4,102,232 | | 2004 | 4,055,691 | | 2003 | 4,009,714 | | 2002 | 3,930,001 | | 2001 | 3,844,080 | | 2000 | 3,759,529 | | 1999 | 3,671,279 | | 1998 | 3,608,487 | | 1997 | 3,531,191 | | 1996 | 3,460,161 | | 1995 | 3,367,218 | | 1994 | 3,265,497 | | 1993 | 3,131,158 | | 1992 | 3,020,968 | | 1991 | 2,844,574 |
|