| Year | Value | | 2021 | 10,511,870.877 | | 2020 | 10,502,856.757 | | 2019 | 10,479,543.889 | | 2018 | 10,469,586.092 | | 2017 | 10,437,094.501 | | 2016 | 10,405,861.934 | | 2015 | 10,374,520.156 | | 2014 | 10,342,584.597 | | 2013 | 10,312,408.726 | | 2012 | 10,265,058.273 | | 2011 | 10,205,496.706 | | 2010 | 10,160,511.226 | | 2009 | 10,117,792.354 | | 2008 | 10,071,120.705 | | 2007 | 10,050,278.199 | | 2006 | 10,010,565.287 | | 2005 | 9,972,811.375 | | 2004 | 9,885,653.852 | | 2003 | 9,870,311.268 | | 2002 | 9,808,025.138 | | 2001 | 9,785,263.281 | | 2000 | 9,738,481.23 | | 1999 | 9,707,191.054 | | 1998 | 9,657,457.156 | | 1997 | 9,633,400.827 | | 1996 | 9,585,101.718 | | 1995 | 9,545,447.105 | | 1994 | 9,473,903.149 | | 1993 | 9,412,445.284 | | 1992 | 9,533,275.535 | | 1991 | 9,492,238.467 | | 1990 | 9,462,678 | | 1989 | 9,450,230.033 | | 1988 | 9,413,806.967 | | 1987 | 9,373,122.9 | | 1986 | 9,334,690.633 | | 1985 | 9,302,317.967 | | 1984 | 9,252,700.3 | | 1983 | 9,230,908.633 | | 1982 | 9,239,432.217 | | 1981 | 9,209,771.8 | | 1980 | 9,204,706.383 | | 1979 | 9,181,515.967 | | 1978 | 9,177,946.55 | | 1977 | 9,154,764.133 | | 1976 | 9,147,821.717 | | 1975 | 9,137,262.3 | | 1974 | 9,120,751.3 | | 1973 | 9,124,251.3 | | 1972 | 9,108,669.3 | | 1971 | 9,087,639.3 | | 1970 | 9,079,704.3 | | 1969 | 9,070,119.3 | | 1968 | 9,073,169.3 | | 1967 | 9,060,419.3 | | 1966 | 9,053,099.3 | | 1965 | 9,047,599.3 | | 1964 | 9,029,049.3 | | 1963 | 9,010,229.3 | | 1962 | 8,984,469.3 | | 1961 | 8,967,929.3 |
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