Year | Value | 2021 | 225,937.142 | 2020 | 177,096.229 | 2019 | 379,693.79 | 2018 | 368,667.21114602 | 2017 | 341,414 | 2016 | 346,480 | 2015 | 346,813 | 2014 | 313,928.45294934 | 2013 | 338,572 | 2012 | 332,153.24708561 | 2011 | 332,475.37303001 | 2010 | 307,973.33363289 | 2009 | 218,602 | 2008 | 220,463 | 2007 | 230,626 | 2006 | 224,301 | 2005 | 206,217 | 2004 | 194,329 | 2003 | 187,227 | 2002 | 195,329 | 2001 | 253,222 | 2000 | 259,610 | 1999 | 261,900 | 1998 | 274,600 | 1997 | 276,000 | 1996 | 188,500 | 1995 | 192,200 | 1994 | 223,700 | 1993 | 174,600 | 1992 | 204,900 | 1991 | 203,900 | 1990 | 210,600 | 1989 | 216,600 | 1988 | 212,400 | 1987 | 199,800 | 1986 | 195,700 | 1985 | 198,600 | 1984 | 186,300 | 1983 | 147,500 | 1982 | 140,200 | 1981 | 153,000 | 1980 | 159,200 | 1979 | 140,300 | 1978 | 131,100 | 1977 | 120,700 | 1976 | 118,700 | 1975 | 107,500 | 1974 | 73,100 | 1973 | 85,600 | 1972 | 63,500 | 1971 | 73,100 | 1970 | 82,100 |
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