Year | Value | 2021 | 255,156.89 | 2020 | 249,969.9 | 2019 | 244,782.9 | 2018 | 246,985.89 | 2017 | 245,181.08 | 2016 | 244,430 | 2015 | 246,958.04 | 2014 | 248,315.8 | 2013 | 249,673.7 | 2012 | 251,002.6 | 2011 | 249,642 | 2010 | 247,943 | 2009 | 246,334 | 2008 | 244,735 | 2007 | 243,126 | 2006 | 241,527 | 2005 | 239,928 | 2004 | 238,189 | 2003 | 236,720 | 2002 | 235,251 | 2001 | 233,782 | 2000 | 232,313 | 1999 | 230,844 | 1998 | 229,375 | 1997 | 227,906 | 1996 | 226,437 | 1995 | 224,968 | 1994 | 223,498 | 1993 | 226,266.773 | 1992 | 225,634.545 | 1991 | 225,002.318 | 1990 | 224,370.091 | 1989 | 195,867.864 | 1988 | 195,235.636 | 1987 | 194,603.409 | 1986 | 193,971.182 | 1985 | 193,238.955 | 1984 | 192,606.727 | 1983 | 191,974.5 | 1982 | 191,442.273 | 1981 | 190,810.045 | 1980 | 190,277.818 | 1979 | 189,745.591 | 1978 | 189,113.364 | 1977 | 188,481.136 | 1976 | 187,748.909 | 1975 | 187,216.682 | 1974 | 186,684.455 | 1973 | 186,152.227 | 1972 | 185,650 | 1971 | 179,220 | 1970 | 179,130 | 1969 | 178,190 | 1968 | 177,800 | 1967 | 176,840 | 1966 | 176,750 | 1965 | 177,500 | 1964 | 176,680 | 1963 | 174,300 | 1962 | 170,990 | 1961 | 169,560 |
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