| Year | Value | | 2022 | 12,794,620 | | 2021 | 12,460,739 | | 2020 | 12,142,139 | | 2019 | 11,830,199 | | 2018 | 11,521,486 | | 2017 | 11,205,098 | | 2016 | 10,873,849 | | 2015 | 10,539,179 | | 2014 | 10,216,251 | | 2013 | 9,909,110 | | 2012 | 9,601,232 | | 2011 | 9,286,216 | | 2010 | 8,994,764 | | 2009 | 8,724,539 | | 2008 | 8,469,226 | | 2007 | 8,228,588 | | 2006 | 7,976,750 | | 2005 | 7,716,370 | | 2004 | 7,466,456 | | 2003 | 7,204,910 | | 2002 | 6,919,612 | | 2001 | 6,653,065 | | 2000 | 6,445,522 | | 1999 | 6,266,398 | | 1998 | 6,099,451 | | 1997 | 5,978,446 | | 1996 | 5,889,377 | | 1995 | 5,774,873 | | 1994 | 5,639,064 | | 1993 | 5,505,717 | | 1992 | 5,355,872 | | 1991 | 5,217,621 | | 1990 | 5,113,174 | | 1989 | 5,015,634 | | 1988 | 4,923,747 | | 1987 | 4,844,212 | | 1986 | 4,762,796 | | 1985 | 4,672,797 | | 1984 | 4,571,685 | | 1983 | 4,460,149 | | 1982 | 4,347,812 | | 1981 | 4,256,300 | | 1980 | 4,190,751 | | 1979 | 4,122,020 | | 1978 | 4,034,553 | | 1977 | 3,949,578 | | 1976 | 3,870,737 | | 1975 | 3,787,958 | | 1974 | 3,704,526 | | 1973 | 3,619,666 | | 1972 | 3,536,111 | | 1971 | 3,451,876 | | 1970 | 3,365,559 | | 1969 | 3,281,219 | | 1968 | 3,196,527 | | 1967 | 3,110,495 | | 1966 | 3,026,987 | | 1965 | 2,945,571 | | 1964 | 2,865,956 | | 1963 | 2,792,869 | | 1962 | 2,727,214 | | 1961 | 2,666,422 | | 1960 | 2,611,022 |
|