Year | Value | 2023 | 21,954,020 | 2022 | 22,269,513 | 2021 | 22,089,192 | 2020 | 22,071,607 | 2019 | 22,289,717 | 2018 | 22,374,676 | 2017 | 22,424,263 | 2016 | 22,240,023 | 2015 | 22,339,840 | 2014 | 22,422,407 | 2013 | 22,269,927 | 2012 | 22,271,546 | 2011 | 22,128,498 | 2010 | 22,227,224 | 2009 | 22,163,640 | 2008 | 22,096,862 | 2007 | 22,091,027 | 2006 | 22,165,811 | 2005 | 22,161,544 | 2004 | 22,289,175 | 2003 | 22,400,086 | 2002 | 22,627,153 | 2001 | 23,439,967 | 2000 | 23,523,573 | 1999 | 23,475,771 | 1998 | 23,401,082 | 1997 | 23,434,245 | 1996 | 23,370,853 | 1995 | 23,742,002 | 1994 | 23,954,782 | 1993 | 24,080,424 | 1992 | 24,226,317 | 1991 | 24,236,250 |
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