| Year | Value | | 2022 | 3,277,089 | | 2021 | 3,363,533 | | 2020 | 3,447,442 | | 2019 | 3,512,605 | | 2018 | 3,526,044 | | 2017 | 3,498,066 | | 2016 | 3,449,050 | | 2015 | 3,394,017 | | 2014 | 3,347,091 | | 2013 | 3,315,962 | | 2012 | 3,299,253 | | 2011 | 3,292,263 | | 2010 | 3,281,686 | | 2009 | 3,262,625 | | 2008 | 3,238,895 | | 2007 | 3,223,947 | | 2006 | 3,256,182 | | 2005 | 3,291,991 | | 2004 | 3,334,736 | | 2003 | 3,396,634 | | 2002 | 3,459,654 | | 2001 | 3,492,633 | | 2000 | 3,502,918 | | 1999 | 3,505,595 | | 1998 | 3,491,027 | | 1997 | 3,461,933 | | 1996 | 3,429,281 | | 1995 | 3,404,631 | | 1994 | 3,392,046 | | 1993 | 3,389,059 | | 1992 | 3,394,617 | | 1991 | 3,401,983 | | 1990 | 3,407,231 | | 1989 | 3,408,221 | | 1988 | 3,402,617 | | 1987 | 3,395,716 | | 1986 | 3,388,918 | | 1985 | 3,380,775 | | 1984 | 3,371,708 | | 1983 | 3,359,711 | | 1982 | 3,338,082 | | 1981 | 3,316,419 | | 1980 | 3,289,409 | | 1979 | 3,260,460 | | 1978 | 3,233,067 | | 1977 | 3,189,850 | | 1976 | 3,122,651 | | 1975 | 3,064,782 | | 1974 | 3,024,919 | | 1973 | 3,034,494 | | 1972 | 3,047,697 | | 1971 | 3,023,647 | | 1970 | 3,030,131 | | 1969 | 3,044,466 | | 1968 | 2,965,542 | | 1967 | 2,828,100 | | 1966 | 2,705,415 | | 1965 | 2,631,921 | | 1964 | 2,604,877 | | 1963 | 2,547,853 | | 1962 | 2,493,242 | | 1961 | 2,444,523 | | 1960 | 2,408,929 |
|