| Year | Value | | 2022 | 8,614,935 | | 2021 | 8,449,834 | | 2020 | 8,284,447 | | 2019 | 8,122,618 | | 2018 | 7,966,181 | | 2017 | 7,810,471 | | 2016 | 7,656,047 | | 2015 | 7,502,101 | | 2014 | 7,347,527 | | 2013 | 7,192,279 | | 2012 | 7,041,528 | | 2011 | 6,911,674 | | 2010 | 6,805,605 | | 2009 | 6,714,016 | | 2008 | 6,638,373 | | 2007 | 6,578,079 | | 2006 | 6,511,613 | | 2005 | 6,450,827 | | 2004 | 6,405,855 | | 2003 | 6,353,380 | | 2002 | 6,300,516 | | 2001 | 6,257,972 | | 2000 | 6,213,071 | | 1999 | 6,145,623 | | 1998 | 6,055,671 | | 1997 | 5,957,992 | | 1996 | 5,861,593 | | 1995 | 5,765,155 | | 1994 | 5,688,565 | | 1993 | 5,641,532 | | 1992 | 5,539,475 | | 1991 | 5,388,173 | | 1990 | 5,247,850 | | 1989 | 5,103,605 | | 1988 | 4,943,214 | | 1987 | 4,763,064 | | 1986 | 4,593,806 | | 1985 | 4,439,415 | | 1984 | 4,286,632 | | 1983 | 4,129,408 | | 1982 | 3,975,219 | | 1981 | 3,833,401 | | 1980 | 3,677,030 | | 1979 | 3,536,239 | | 1978 | 3,436,046 | | 1977 | 3,338,122 | | 1976 | 3,232,642 | | 1975 | 3,125,564 | | 1974 | 3,020,690 | | 1973 | 2,918,992 | | 1972 | 2,821,992 | | 1971 | 2,729,604 | | 1970 | 2,641,122 | | 1969 | 2,556,659 | | 1968 | 2,475,957 | | 1967 | 2,398,266 | | 1966 | 2,323,325 | | 1965 | 2,250,818 | | 1964 | 2,180,688 | | 1963 | 2,112,858 | | 1962 | 2,047,197 | | 1961 | 1,983,717 | | 1960 | 1,922,334 |
|