Year | Value | 2021 | 413,160.71 | 2020 | 413,160.71 | 2019 | 413,160.71 | 2018 | 413,388.496 | 2017 | 413,351.408 | 2016 | 413,602 | 2015 | 414,564 | 2014 | 414,310 | 2013 | 414,316.35 | 2012 | 413,981.9 | 2011 | 413,880 | 2010 | 413,740 | 2009 | 413,800 | 2008 | 413,090 | 2007 | 412,520 | 2006 | 411,810 | 2005 | 412,110 | 2004 | 411,450 | 2003 | 399,057 | 2002 | 398,550 | 2001 | 401,090 | 2000 | 400,210 | 1999 | 397,310 | 1998 | 398,260 | 1997 | 396,900 | 1996 | 396,360 | 1995 | 396,490 | 1994 | 396,400 | 1993 | 388,620 | 1992 | 388,650 | 1991 | 386,220 | 1990 | 386,760 | 1989 | 387,600 | 1988 | 388,170 | 1987 | 387,790 | 1986 | 386,880 | 1985 | 390,510 | 1984 | 396,100 | 1983 | 392,820 | 1982 | 391,070 | 1981 | 391,710 | 1980 | 438,300 | 1979 | 438,200 | 1978 | 438,430 | 1977 | 438,320 | 1976 | 440,210 | 1975 | 437,530 | 1974 | 443,360 | 1973 | 443,040 | 1972 | 453,960 | 1971 | 454,330 | 1970 | 442,160 | 1969 | 442,030 | 1968 | 442,030 | 1967 | 442,510 | 1966 | 441,670 | 1965 | 441,670 | 1964 | 441,640 | 1963 | 445,100 | 1962 | 449,000 | 1961 | 454,710 |
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