Year | Value | 2021 | 136,609.957 | 2020 | 8,717.833 | 2019 | 17,505.689636364 | 2018 | 16,633.138941549 | 2017 | 154,573 | 2016 | 144,060 | 2015 | 203,617 | 2014 | 8,592 | 2013 | 10,032 | 2012 | 127,296.65 | 2011 | 306,034.3 | 2010 | 260,502 | 2008 | 62,467 | 2007 | 61,589 | 2006 | 58,679 | 2005 | 53,880 | 2004 | 49,888 | 2003 | 50,977 | 2002 | 47,075 | 2001 | 48,517 | 2000 | 89,628 | 1999 | 77,700 | 1998 | 48,800 | 1997 | 49,600 | 1994 | 234,700 | 1993 | 219,000 | 1992 | 246,000 | 1991 | 292,500 | 1990 | 407,200 | 1989 | 365,300 | 1988 | 303,500 | 1987 | 257,900 | 1986 | 237,700 | 1985 | 253,900 | 1984 | 245,600 | 1983 | 236,700 | 1982 | 253,100 | 1981 | 278,300 | 1980 | 257,400 | 1979 | 295,700 | 1978 | 317,100 | 1977 | 299,400 | 1976 | 256,800 | 1975 | 232,600 | 1974 | 240,600 | 1973 | 230,600 | 1972 | 230,100 | 1971 | 214,200 | 1970 | 187,800 |
|