| Year | Value | | 2022 | 3,422,794 | | 2021 | 3,426,260 | | 2020 | 3,429,086 | | 2019 | 3,428,409 | | 2018 | 3,427,042 | | 2017 | 3,422,200 | | 2016 | 3,413,766 | | 2015 | 3,402,818 | | 2014 | 3,391,662 | | 2013 | 3,381,180 | | 2012 | 3,371,133 | | 2011 | 3,361,637 | | 2010 | 3,352,651 | | 2009 | 3,344,156 | | 2008 | 3,336,126 | | 2007 | 3,328,651 | | 2006 | 3,322,282 | | 2005 | 3,317,665 | | 2004 | 3,313,801 | | 2003 | 3,310,202 | | 2002 | 3,306,441 | | 2001 | 3,300,939 | | 2000 | 3,292,224 | | 1999 | 3,278,963 | | 1998 | 3,262,683 | | 1997 | 3,245,069 | | 1996 | 3,226,633 | | 1995 | 3,208,300 | | 1994 | 3,189,945 | | 1993 | 3,171,747 | | 1992 | 3,153,732 | | 1991 | 3,135,374 | | 1990 | 3,117,012 | | 1989 | 3,097,889 | | 1988 | 3,077,760 | | 1987 | 3,058,787 | | 1986 | 3,041,205 | | 1985 | 3,024,218 | | 1984 | 3,008,255 | | 1983 | 2,993,285 | | 1982 | 2,979,182 | | 1981 | 2,966,076 | | 1980 | 2,953,750 | | 1979 | 2,940,729 | | 1978 | 2,925,840 | | 1977 | 2,909,327 | | 1976 | 2,891,094 | | 1975 | 2,871,947 | | 1974 | 2,853,588 | | 1973 | 2,836,825 | | 1972 | 2,821,086 | | 1971 | 2,805,492 | | 1970 | 2,790,265 | | 1969 | 2,773,957 | | 1968 | 2,754,417 | | 1967 | 2,731,847 | | 1966 | 2,707,030 | | 1965 | 2,680,427 | | 1964 | 2,652,376 | | 1963 | 2,622,936 | | 1962 | 2,592,441 | | 1961 | 2,561,153 | | 1960 | 2,529,021 |
|