| Year | Value | | 2023 | 9,925,443 | | 2022 | 9,793,778 | | 2021 | 9,620,091 | | 2020 | 9,502,134 | | 2019 | 9,466,453 | | 2018 | 9,309,225 | | 2017 | 9,194,515 | | 2016 | 9,128,587 | | 2015 | 9,095,975 | | 2014 | 9,031,991 | | 2013 | 9,054,383 | | 2012 | 9,013,873 | | 2011 | 8,900,853 | | 2010 | 8,887,012 | | 2009 | 8,909,191 | | 2008 | 8,830,188 | | 2007 | 8,674,930 | | 2006 | 8,508,765 | | 2005 | 8,457,142 | | 2004 | 8,618,836 | | 2003 | 8,561,053 | | 2002 | 8,532,973 | | 2001 | 8,384,016 | | 2000 | 8,237,559 | | 1999 | 8,047,998 | | 1998 | 7,899,213 | | 1997 | 7,760,296 | | 1996 | 7,566,030 | | 1995 | 7,465,688 | | 1994 | 7,390,795 | | 1993 | 7,256,259 | | 1992 | 7,195,092 | | 1991 | 7,102,096 |
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