| Year | Value | | 2022 | 3,898,258 | | 2021 | 3,790,664 | | 2020 | 3,685,020 | | 2019 | 3,581,448 | | 2018 | 3,479,999 | | 2017 | 3,380,930 | | 2016 | 3,302,741 | | 2015 | 3,218,283 | | 2014 | 3,134,764 | | 2013 | 3,051,946 | | 2012 | 2,969,835 | | 2011 | 2,888,204 | | 2010 | 2,807,401 | | 2009 | 2,727,093 | | 2008 | 2,647,431 | | 2007 | 2,568,140 | | 2006 | 2,496,025 | | 2005 | 2,425,915 | | 2004 | 2,357,720 | | 2003 | 2,291,359 | | 2002 | 2,226,847 | | 2001 | 2,164,070 | | 2000 | 2,103,044 | | 1999 | 2,043,664 | | 1998 | 1,985,912 | | 1997 | 1,926,689 | | 1996 | 1,829,843 | | 1995 | 1,737,611 | | 1994 | 1,649,878 | | 1993 | 1,566,383 | | 1992 | 1,486,950 | | 1991 | 1,411,345 | | 1990 | 1,339,452 |
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