| Year | Value | | 2023 | 6,717,914 | | 2022 | 6,618,934 | | 2021 | 6,512,383 | | 2020 | 6,384,857 | | 2019 | 6,379,224 | | 2018 | 6,232,552 | | 2017 | 6,067,148 | | 2016 | 5,911,957 | | 2015 | 5,791,436 | | 2014 | 5,659,112 | | 2013 | 5,572,169 | | 2012 | 5,481,176 | | 2011 | 5,391,496 | | 2010 | 5,288,034 | | 2009 | 5,211,594 | | 2008 | 5,082,681 | | 2007 | 4,940,377 | | 2006 | 4,800,627 | | 2005 | 4,682,686 | | 2004 | 4,512,493 | | 2003 | 4,473,272 | | 2002 | 4,358,602 | | 2001 | 4,283,105 | | 2000 | 4,176,451 | | 1999 | 4,051,771 | | 1998 | 3,998,284 | | 1997 | 3,943,938 | | 1996 | 3,906,133 | | 1995 | 3,836,098 | | 1994 | 3,716,110 | | 1993 | 3,611,622 | | 1992 | 3,589,993 | | 1991 | 3,546,292 |
|