| Year | Value | | 2021 | 6,191,413.58 | | 2020 | 6,185,615.98 | | 2019 | 6,174,828.56 | | 2018 | 6,166,220.738 | | 2017 | 6,150,190.843 | | 2016 | 6,130,059.112 | | 2015 | 6,108,227.732 | | 2014 | 6,094,951.888 | | 2013 | 6,076,192.323 | | 2012 | 6,047,513.327 | | 2011 | 5,992,629.911 | | 2010 | 5,962,970.446 | | 2009 | 5,928,427.001 | | 2008 | 5,894,895.698 | | 2007 | 5,886,787.379 | | 2006 | 5,861,187.364 | | 2005 | 5,834,252.579 | | 2004 | 5,763,220.78 | | 2003 | 5,748,887.309 | | 2002 | 5,691,348.343 | | 2001 | 5,674,009.64 | | 2000 | 5,640,712.362 | | 1999 | 5,610,974.15 | | 1998 | 5,584,239.716 | | 1997 | 5,564,962.61 | | 1996 | 5,535,175.618 | | 1995 | 5,509,104.072 | | 1994 | 5,479,275.182 | | 1993 | 5,445,234.384 | | 1992 | 5,585,063.702 | | 1991 | 5,563,554.7 | | 1990 | 5,548,434.3 | | 1989 | 5,529,804.3 | | 1988 | 5,511,144.3 | | 1987 | 5,476,174.3 | | 1986 | 5,459,644.3 | | 1985 | 5,421,784.3 | | 1984 | 5,399,334.3 | | 1983 | 5,400,054.3 | | 1982 | 5,391,784.3 | | 1981 | 5,388,764.3 | | 1980 | 5,390,434.3 | | 1979 | 5,381,594.3 | | 1978 | 5,379,044.3 | | 1977 | 5,374,764.3 | | 1976 | 5,372,184.3 | | 1975 | 5,364,507.3 | | 1974 | 5,361,057.3 | | 1973 | 5,366,146.3 | | 1972 | 5,360,934.3 | | 1971 | 5,347,394.3 | | 1970 | 5,342,394.3 | | 1969 | 5,349,304.3 | | 1968 | 5,340,234.3 | | 1967 | 5,329,674.3 | | 1966 | 5,326,074.3 | | 1965 | 5,328,724.3 | | 1964 | 5,326,414.3 | | 1963 | 5,319,354.3 | | 1962 | 5,312,524.3 | | 1961 | 5,303,384.3 |
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