| Year | Value | | 2022 | 21,860,771 | | 2021 | 23,939,651 | | 2020 | 21,865,215 | | 2019 | 21,455,736 | | 2018 | 19,898,785 | | 2017 | 18,394,762 | | 2016 | 17,584,969 | | 2015 | 16,724,440 | | 2014 | 16,959,455 | | 2013 | 16,973,133 | | 2012 | 16,387,536 | | 2011 | 15,292,924 | | 2010 | 13,793,729 | | 2009 | 12,597,171 | | 2008 | 11,580,149 | | 2007 | 10,751,622 | | 2006 | 9,444,140 | | 2005 | 8,544,255 | | 2004 | 8,213,959 | | 2003 | 7,349,202 | | 2002 | 6,395,725 | | 2001 | 5,776,360 | | 2000 | 5,447,346 | | 1999 | 4,275,048 | | 1998 | 3,174,369 | | 1997 | 2,229,862 | | 1996 | 1,361,861 | | 1995 | 798,373 | | 1994 | 484,823 | | 1993 | 290,843 | | 1992 | 233,324 | | 1991 | 189,664 | | 1990 | 133,912 | | 1989 | 89,193 | | 1988 | 51,280 | | 1987 | 28,060 | | 1986 | 10,000 | | 1985 | 4,400 | | 1984 | 1,000 |
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