| Year | Value | | 2021 | 1,039,010 | | 2020 | 932,389 | | 2019 | 2,029,701 | | 2018 | 1,831,903 | | 2017 | 1,864,653 | | 2016 | 1,711,274 | | 2015 | 1,679,156 | | 2014 | 2,074,020 | | 2013 | 1,870,968 | | 2012 | 1,630,308.4321054 | | 2011 | 1,563,593.8532111 | | 2010 | 1,405,169 | | 2009 | 847,353 | | 2008 | 904,885 | | 2007 | 918,665 | | 2006 | 918,640 | | 2005 | 818,773 | | 2004 | 762,784 | | 2003 | 690,528 | | 2002 | 1,234,779 | | 2001 | 1,188,089 | | 2000 | 1,099,772 | | 1999 | 1,058,200 | | 1998 | 1,110,300 | | 1997 | 1,114,000 | | 1996 | 970,000 | | 1995 | 970,000 | | 1994 | 1,112,800 | | 1993 | 866,000 | | 1992 | 954,000 | | 1991 | 911,000 | | 1990 | 931,200 | | 1989 | 963,400 | | 1988 | 886,600 | | 1987 | 798,300 | | 1986 | 807,400 | | 1985 | 700,900 | | 1984 | 711,400 | | 1983 | 533,800 | | 1982 | 560,400 | | 1981 | 553,500 | | 1980 | 558,600 | | 1979 | 572,300 | | 1978 | 532,300 | | 1977 | 440,000 | | 1976 | 405,300 | | 1975 | 355,000 |
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