| Year | Value | | 2022 | 6,574,210 | | 2021 | 6,500,493 | | 2020 | 6,400,651 | | 2019 | 6,289,199 | | 2018 | 6,170,091 | | 2017 | 6,026,943 | | 2016 | 5,870,876 | | 2015 | 5,724,797 | | 2014 | 5,588,108 | | 2013 | 5,460,399 | | 2012 | 5,346,520 | | 2011 | 5,231,907 | | 2010 | 5,103,383 | | 2009 | 4,965,095 | | 2008 | 4,823,502 | | 2007 | 4,662,759 | | 2006 | 4,485,355 | | 2005 | 4,304,583 | | 2004 | 4,123,374 | | 2003 | 3,958,909 | | 2002 | 3,817,954 | | 2001 | 3,706,167 | | 2000 | 3,630,990 | | 1999 | 3,577,746 | | 1998 | 3,525,593 | | 1997 | 3,470,956 | | 1996 | 3,413,761 | | 1995 | 3,352,894 | | 1994 | 3,280,419 | | 1993 | 3,194,770 | | 1992 | 3,096,816 | | 1991 | 2,982,766 | | 1990 | 2,851,155 | | 1989 | 2,701,773 | | 1988 | 2,550,391 | | 1987 | 2,422,346 | | 1986 | 2,320,200 | | 1985 | 2,235,810 | | 1984 | 2,174,708 | | 1983 | 2,128,800 | | 1982 | 2,075,923 | | 1981 | 2,016,831 | | 1980 | 1,962,437 | | 1979 | 1,915,768 | | 1978 | 1,876,354 | | 1977 | 1,841,447 | | 1976 | 1,810,373 | | 1975 | 1,780,314 | | 1974 | 1,751,634 | | 1973 | 1,724,394 | | 1972 | 1,696,404 | | 1971 | 1,675,826 | | 1970 | 1,658,241 | | 1969 | 1,632,551 | | 1968 | 1,600,282 | | 1967 | 1,565,330 | | 1966 | 1,530,719 | | 1965 | 1,496,749 | | 1964 | 1,462,649 | | 1963 | 1,429,095 | | 1962 | 1,395,635 | | 1961 | 1,361,729 | | 1960 | 1,327,975 |
|