Year | Value | 2021 | 285,537.54 | 2020 | 285,537.54 | 2019 | 286,211.86 | 2018 | 286,601 | 2017 | 286,974.99 | 2016 | 287,180.21 | 2015 | 287,269 | 2014 | 287,665 | 2013 | 287,737 | 2012 | 288,448 | 2011 | 288,786 | 2010 | 289,263 | 2009 | 290,199 | 2008 | 291,101 | 2007 | 292,061 | 2006 | 293,127 | 2005 | 293,904 | 2004 | 294,584 | 2003 | 295,346 | 2002 | 296,107 | 2001 | 297,133 | 2000 | 298,074 | 1999 | 299,291 | 1998 | 299,800 | 1997 | 300,396 | 1996 | 300,963 | 1995 | 301,502 | 1994 | 302,049 | 1993 | 302,913 | 1992 | 303,843 | 1991 | 304,849 | 1990 | 305,928 | 1989 | 307,409 | 1988 | 308,300 | 1987 | 313,530 | 1986 | 313,950 | 1985 | 314,420 | 1984 | 315,080 | 1983 | 315,650 | 1982 | 316,460 | 1981 | 316,870 | 1980 | 317,220 | 1979 | 318,340 | 1978 | 319,610 | 1977 | 319,100 | 1976 | 320,210 | 1975 | 323,570 | 1974 | 324,420 | 1973 | 324,600 | 1972 | 325,150 | 1971 | 326,230 | 1970 | 324,950 | 1969 | 331,730 | 1968 | 331,780 | 1967 | 336,290 | 1966 | 338,460 | 1965 | 340,010 | 1964 | 341,090 | 1963 | 343,540 | 1962 | 344,400 | 1961 | 345,390 |
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