Year | Value | 2021 | 534,427.861 | 2020 | 378,675.5464 | 2019 | 876,670.09 | 2018 | 862,254.21114602 | 2017 | 781,350 | 2016 | 720,715 | 2015 | 720,955 | 2014 | 680,337.1268038 | 2013 | 703,872.772 | 2012 | 661,095.24972544 | 2011 | 638,799.44449421 | 2010 | 591,685.62001965 | 2009 | 373,213 | 2008 | 366,757 | 2007 | 421,479 | 2006 | 378,262 | 2005 | 380,427 | 2004 | 356,660 | 2003 | 338,510 | 2002 | 320,253 | 2001 | 349,026 | 2000 | 354,035 | 1999 | 337,800 | 1998 | 332,300 | 1997 | 337,600 | 1996 | 293,600 | 1995 | 278,900 | 1994 | 303,500 | 1993 | 302,700 | 1992 | 302,300 | 1991 | 321,900 | 1990 | 317,100 | 1989 | 311,500 | 1988 | 300,500 | 1987 | 306,600 | 1986 | 304,800 | 1985 | 334,200 | 1984 | 326,600 | 1983 | 329,300 | 1982 | 323,400 | 1981 | 334,600 | 1980 | 321,400 | 1979 | 301,000 | 1978 | 276,000 | 1977 | 262,600 | 1976 | 281,800 | 1975 | 253,200 | 1974 | 220,100 | 1973 | 228,200 | 1972 | 224,700 | 1971 | 228,000 | 1970 | 220,000 |
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