Year | Value | 2021 | 291,021.164 | 2020 | 192,897.4234 | 2019 | 486,296.09 | 2018 | 474,721.21114602 | 2017 | 404,599.38 | 2016 | 353,162 | 2015 | 376,858 | 2014 | 355,316.60399013 | 2013 | 368,447.772 | 2012 | 335,276.11842898 | 2011 | 338,788.5426994 | 2010 | 304,105.79060122 | 2001 | 121,438 | 2000 | 134,784 | 1999 | 128,400 | 1998 | 120,000 | 1997 | 121,400 | 1996 | 117,300 | 1995 | 114,800 | 1994 | 127,000 | 1993 | 122,400 | 1992 | 122,600 | 1991 | 131,500 | 1990 | 148,400 | 1989 | 151,800 | 1988 | 165,000 | 1987 | 172,100 | 1986 | 177,600 | 1985 | 194,600 | 1984 | 194,500 | 1983 | 205,800 | 1982 | 194,700 | 1981 | 216,700 | 1980 | 217,900 | 1979 | 211,400 | 1978 | 195,900 | 1977 | 182,200 | 1976 | 192,600 | 1975 | 171,200 | 1974 | 137,800 | 1973 | 140,600 | 1972 | 139,200 | 1971 | 144,200 | 1970 | 142,500 |
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