| Year | Value | | 2022 | 25,299,000 | | 2021 | 24,471,000 | | 2020 | 24,293,900 | | 2019 | 25,717,700 | | 2018 | 26,065,600 | | 2017 | 26,693,300 | | 2016 | 25,534,800 | | 2015 | 26,309,300 | | 2014 | 28,595,600 | | 2013 | 30,364,900 | | 2012 | 30,235,400 | | 2011 | 25,240,800 | | 2010 | 19,402,600 | | 2009 | 17,063,200 | | 2008 | 14,910,573 | | 2007 | 12,322,676 | | 2006 | 7,775,737 | | 2005 | 5,398,000 | | 2004 | 2,447,000 | | 2003 | 1,330,730 | | 2002 | 1,027,000 | | 2001 | 582,000 | | 2000 | 197,300 | | 1999 | 49,500 | | 1998 | 29,700 | | 1997 | 11,202 | | 1996 | 9,798 | | 1995 | 4,600 | | 1994 | 400 |
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