| Year | Value | | 2021 | 4,628,016.538 | | 2020 | 4,629,280.538 | | 2019 | 4,634,984.538 | | 2018 | 4,636,998.538 | | 2017 | 4,636,782.538 | | 2016 | 4,633,149 | | 2015 | 4,627,040 | | 2014 | 4,620,862 | | 2013 | 4,614,693 | | 2012 | 4,608,523.538 | | 2011 | 4,627,364 | | 2010 | 4,652,720 | | 2009 | 4,678,033 | | 2008 | 4,703,346 | | 2007 | 4,728,660 | | 2006 | 4,734,832 | | 2005 | 4,745,960 | | 2004 | 4,747,823 | | 2003 | 4,749,687 | | 2002 | 4,751,554 | | 2001 | 4,762,525.608 | | 2000 | 4,756,864 | | 1999 | 4,751,504 | | 1998 | 4,758,274 | | 1997 | 4,761,004 | | 1996 | 4,774,984 | | 1995 | 4,814,004 | | 1994 | 4,824,683 | | 1993 | 4,843,453 | | 1992 | 4,868,943 | | 1991 | 4,884,815.464 | | 1990 | 4,883,513 | | 1989 | 4,882,253 | | 1988 | 4,880,993 | | 1987 | 4,879,733 | | 1986 | 4,922,981.92 | | 1985 | 4,923,773 | | 1984 | 4,924,553 | | 1983 | 4,925,333 | | 1982 | 4,926,113 | | 1981 | 4,894,533 | | 1980 | 4,898,233 | | 1979 | 4,901,983 | | 1978 | 4,905,733 | | 1977 | 4,931,163 | | 1976 | 4,933,172.9 | | 1975 | 4,932,893 | | 1974 | 4,932,623 | | 1973 | 4,942,773 | | 1972 | 4,953,503 | | 1971 | 4,963,233 | | 1970 | 4,975,613 | | 1969 | 4,987,433 | | 1968 | 4,992,263 | | 1967 | 4,988,734 | | 1966 | 4,992,514 | | 1965 | 4,994,644 | | 1964 | 5,021,664 | | 1963 | 5,041,603 | | 1962 | 5,062,713 | | 1961 | 5,093,524 |
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