| Year | Value | | 2021 | 10,100,188.759 | | 2020 | 10,095,968.554 | | 2019 | 10,086,810.73 | | 2018 | 10,090,180.655 | | 2017 | 10,075,090.441 | | 2016 | 10,063,049.887 | | 2015 | 10,048,771.249 | | 2014 | 10,015,370.637 | | 2013 | 10,011,765.318 | | 2012 | 9,986,877.479 | | 2011 | 9,979,335.395 | | 2010 | 9,956,585.113 | | 2009 | 9,946,073.515 | | 2008 | 9,923,486.607 | | 2007 | 9,918,306.52 | | 2006 | 9,901,112.923 | | 2005 | 9,879,528.796 | | 2004 | 10,032,548.739 | | 2003 | 10,020,882.292 | | 2002 | 10,173,607.795 | | 2001 | 10,163,912.308 | | 2000 | 10,146,377.201 | | 1999 | 10,146,955.504 | | 1998 | 10,119,973.307 | | 1997 | 10,100,219.15 | | 1996 | 9,972,565.5 | | 1995 | 9,953,908.9 | | 1994 | 9,911,762.5 | | 1993 | 9,880,865.7 | | 1992 | 9,896,861.7 | | 1991 | 9,883,563.9 | | 1990 | 9,844,240.9 | | 1989 | 9,850,963 | | 1988 | 9,822,927 | | 1987 | 9,808,608 | | 1986 | 9,773,547 | | 1985 | 9,775,427 | | 1984 | 9,747,416.6 | | 1983 | 9,706,140.4 | | 1982 | 9,713,204.4 | | 1981 | 9,674,661 | | 1980 | 9,699,915 | | 1979 | 9,701,640 | | 1978 | 9,695,725 | | 1977 | 9,672,225 | | 1976 | 9,654,905 | | 1975 | 9,797,995 | | 1974 | 9,781,775 | | 1973 | 9,769,695 | | 1972 | 9,749,255 | | 1971 | 9,723,935 | | 1970 | 9,700,310 | | 1969 | 9,674,665 | | 1968 | 9,685,985 | | 1967 | 9,674,645 | | 1966 | 9,661,805 | | 1965 | 9,645,275 | | 1964 | 9,618,525 | | 1963 | 9,596,675 | | 1962 | 9,582,395 | | 1961 | 9,563,665 |
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