Year | Value | 2021 | 119,077 | 2020 | 224,142.333 | 2019 | 483,580 | 2018 | 475,886.496 | 2017 | 448,477 | 2016 | 413,880 | 2015 | 392,664 | 2014 | 338,053.98166259 | 2013 | 298,450 | 2012 | 252,368.89840523 | 2011 | 227,322 | 2010 | 201,306 | 2009 | 123,541 | 2008 | 125,907 | 2007 | 129,703 | 2006 | 126,845 | 2005 | 124,347 | 2004 | 128,178 | 2003 | 93,576 | 2002 | 97,750 | 2001 | 102,414 | 2000 | 101,591 | 1999 | 95,400 | 1998 | 93,500 | 1997 | 94,900 | 1996 | 91,700 | 1995 | 86,500 | 1994 | 80,700 | 1993 | 76,200 | 1992 | 72,700 | 1991 | 69,800 | 1990 | 69,500 | 1989 | 61,800 | 1988 | 54,600 | 1987 | 48,300 | 1986 | 49,600 | 1985 | 47,400 | 1984 | 44,200 | 1983 | 40,000 | 1982 | 36,800 | 1981 | 34,100 | 1980 | 32,600 | 1979 | 30,800 | 1978 | 29,000 | 1977 | 28,400 | 1976 | 29,500 | 1975 | 29,700 | 1974 | 28,800 |
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