Year | Value | 2021 | 302,910 | 2020 | 303,580 | 2019 | 296,119.07 | 2018 | 305,258.072 | 2017 | 310,465.482 | 2016 | 308,750 | 2015 | 300,470 | 2014 | 300,825 | 2013 | 305,850 | 2012 | 304,030 | 2011 | 301,038 | 2010 | 299,883 | 2009 | 300,026 | 2008 | 299,810 | 2007 | 299,600 | 2006 | 299,460 | 2005 | 299,890 | 2004 | 300,410 | 2003 | 308,760 | 2002 | 302,830 | 2001 | 303,700 | 2000 | 306,520 | 1999 | 306,930 | 1998 | 309,760 | 1997 | 308,950 | 1996 | 309,660 | 1995 | 307,490 | 1994 | 309,640 | 1993 | 307,110 | 1992 | 306,160 | 1991 | 303,550 | 1990 | 303,430 | 1989 | 300,640 | 1988 | 297,440 | 1987 | 296,660 | 1986 | 294,970 | 1985 | 293,980 | 1984 | 293,840 | 1983 | 292,730 | 1982 | 291,770 | 1981 | 290,900 | 1980 | 289,300 | 1979 | 280,040 | 1978 | 279,180 | 1977 | 275,000 | 1976 | 271,500 | 1975 | 269,170 | 1974 | 266,300 | 1973 | 264,250 | 1972 | 261,700 | 1971 | 259,330 | 1970 | 257,050 | 1969 | 254,290 | 1968 | 252,380 | 1967 | 249,380 | 1966 | 247,380 | 1965 | 244,200 | 1964 | 241,100 | 1963 | 238,500 | 1962 | 235,800 | 1961 | 233,700 |
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