| Year | Value | | 2021 | 7,884,285.892 | | 2020 | 7,873,721.361 | | 2019 | 7,857,957.182 | | 2018 | 7,844,080.267 | | 2017 | 7,809,561.887 | | 2016 | 7,788,521.96 | | 2015 | 7,766,539.731 | | 2014 | 7,737,969.489 | | 2013 | 7,715,065.834 | | 2012 | 7,670,678.526 | | 2011 | 7,895,360.368 | | 2010 | 7,861,419.826 | | 2009 | 7,819,391.954 | | 2008 | 7,772,552.305 | | 2007 | 7,750,453.899 | | 2006 | 7,711,563.287 | | 2005 | 7,680,620.375 | | 2004 | 7,594,358.852 | | 2003 | 7,579,151.268 | | 2002 | 7,526,637.138 | | 2001 | 7,503,775.281 | | 2000 | 7,468,474.23 | | 1999 | 7,440,437.654 | | 1998 | 7,401,771.156 | | 1997 | 7,383,190.227 | | 1996 | 7,344,047.518 | | 1995 | 7,304,797.305 | | 1994 | 7,261,159.749 | | 1993 | 7,216,740.284 | | 1992 | 7,343,320.935 | | 1991 | 7,310,663.267 | | 1990 | 7,289,384.2 | | 1989 | 7,276,635.633 | | 1988 | 7,249,776.967 | | 1987 | 7,206,848.3 | | 1986 | 7,186,989.633 | | 1985 | 7,140,450.967 | | 1984 | 7,102,782.3 | | 1983 | 7,090,723.633 | | 1982 | 7,078,801.217 | | 1981 | 7,070,828.8 | | 1980 | 7,054,476.383 | | 1979 | 7,046,153.967 | | 1978 | 7,039,181.55 | | 1977 | 7,023,579.133 | | 1976 | 7,010,776.717 | | 1975 | 7,001,097.3 | | 1974 | 6,984,237.3 | | 1973 | 6,980,316.3 | | 1972 | 6,975,404.3 | | 1971 | 6,963,224.3 | | 1970 | 6,939,644.3 | | 1969 | 6,935,784.3 | | 1968 | 6,924,314.3 | | 1967 | 6,908,234.3 | | 1966 | 6,901,084.3 | | 1965 | 6,894,374.3 | | 1964 | 6,882,724.3 | | 1963 | 6,870,764.3 | | 1962 | 6,853,704.3 | | 1961 | 6,842,494.3 |
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