| Year | Value | | 2023 | 3,715,483 | | 2022 | 3,712,502 | | 2021 | 3,708,610 | | 2020 | 3,722,716 | | 2019 | 3,720,161 | | 2018 | 3,726,549 | | 2017 | 3,728,004 | | 2016 | 3,727,505 | | 2015 | 3,725,276 | | 2014 | 3,719,414 | | 2013 | 3,717,668 | | 2012 | 3,728,874 | | 2011 | 3,756,441 | | 2010 | 3,786,695 | | 2009 | 3,814,419 | | 2008 | 3,848,449 | | 2007 | 3,860,158 | | 2006 | 3,880,347 | | 2005 | 3,902,469 | | 2004 | 3,927,340 | | 2003 | 3,951,736 | | 2002 | 3,978,515 | | 2001 | 4,014,373 | | 2000 | 4,077,131 | | 1999 | 4,157,192 | | 1998 | 4,243,607 | | 1997 | 4,349,913 | | 1996 | 4,491,699 | | 1995 | 4,657,722 | | 1994 | 4,836,076 | | 1993 | 4,911,100 | | 1992 | 4,873,500 | | 1991 | 4,835,900 | | 1990 | 4,802,000 | | 1989 | 4,803,300 | | 1988 | 4,790,700 | | 1987 | 4,743,500 | | 1986 | 4,704,500 | | 1985 | 4,662,900 | | 1984 | 4,622,200 | | 1983 | 4,582,900 | | 1982 | 4,542,800 | | 1981 | 4,504,500 | | 1980 | 4,467,700 | | 1979 | 4,430,200 | | 1978 | 4,397,700 | | 1977 | 4,372,100 | | 1976 | 4,342,400 | | 1975 | 4,311,200 |
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