| Year | Value | | 2023 | 6,740,791 | | 2022 | 6,662,269 | | 2021 | 6,631,021 | | 2020 | 6,441,396 | | 2019 | 6,368,151 | | 2018 | 6,207,946 | | 2017 | 6,042,503 | | 2016 | 5,879,575 | | 2015 | 5,737,985 | | 2014 | 5,572,610 | | 2013 | 5,341,189 | | 2012 | 4,926,872 | | 2011 | 4,660,893 | | 2010 | 4,372,221 | | 2009 | 4,264,404 | | 2008 | 4,090,049 | | 2007 | 4,032,265 | | 2006 | 3,914,535 | | 2005 | 3,804,126 | | 2004 | 3,699,063 | | 2003 | 3,595,207 | | 2002 | 3,498,399 | | 2001 | 3,406,596 | | 2000 | 3,327,447 | | 1999 | 3,224,459 | | 1998 | 3,118,009 | | 1997 | 3,036,093 | | 1996 | 2,933,651 | | 1995 | 2,833,484 | | 1994 | 2,738,595 | | 1993 | 2,649,317 | | 1992 | 2,564,917 | | 1991 | 2,484,228 |
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