Year | Value | 2021 | 525,625.861 | 2020 | 370,198.5464 | 2019 | 857,966.09 | 2018 | 843,583.21114602 | 2017 | 760,811 | 2016 | 701,537 | 2015 | 703,831 | 2014 | 665,781.1268038 | 2013 | 689,280.772 | 2012 | 649,833.24972544 | 2011 | 624,597.44449421 | 2010 | 578,696.62001965 | 2009 | 361,975 | 2008 | 354,861 | 2007 | 400,752 | 2006 | 358,736 | 2005 | 360,846 | 2004 | 337,379 | 2003 | 319,863 | 2002 | 297,804 | 2001 | 328,777 | 2000 | 335,069 | 1999 | 319,300 | 1998 | 313,400 | 1997 | 319,700 | 1996 | 276,400 | 1995 | 264,900 | 1994 | 290,100 | 1993 | 289,100 | 1992 | 296,300 | 1991 | 305,600 | 1990 | 301,300 | 1989 | 296,600 | 1988 | 285,800 | 1987 | 291,800 | 1986 | 288,600 | 1985 | 321,700 | 1984 | 316,800 | 1983 | 323,100 | 1982 | 317,200 | 1981 | 332,600 | 1980 | 319,400 | 1979 | 299,000 | 1978 | 274,000 | 1977 | 260,600 | 1976 | 279,800 | 1975 | 253,200 | 1974 | 220,100 | 1973 | 228,200 | 1972 | 224,700 | 1971 | 228,000 | 1970 | 220,000 |
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