Year | Value | 2022 | 20,427,082 | 2021 | 20,068,434 | 2020 | 19,697,606 | 2019 | 19,303,101 | 2018 | 18,895,976 | 2017 | 18,506,832 | 2016 | 18,150,355 | 2015 | 17,818,523 | 2014 | 17,501,404 | 2013 | 17,185,412 | 2012 | 16,878,912 | 2011 | 16,602,366 | 2010 | 16,361,576 | 2009 | 16,161,940 | 2008 | 15,963,053 | 2007 | 15,742,361 | 2006 | 15,479,602 | 2005 | 15,171,346 | 2004 | 14,818,769 | 2003 | 14,432,896 | 2002 | 14,032,451 | 2001 | 13,628,276 | 2000 | 13,224,634 | 1999 | 12,823,136 | 1998 | 12,429,228 | 1997 | 12,047,583 | 1996 | 11,679,688 | 1995 | 11,325,463 | 1994 | 10,976,746 | 1993 | 10,614,656 | 1992 | 10,235,161 | 1991 | 9,847,048 | 1990 | 9,463,253 | 1989 | 9,102,049 | 1988 | 8,784,059 | 1987 | 8,516,575 | 1986 | 8,289,711 | 1985 | 8,085,260 | 1984 | 7,890,525 | 1983 | 7,704,001 | 1982 | 7,519,317 | 1981 | 7,334,988 | 1980 | 7,145,801 | 1979 | 6,950,203 | 1978 | 6,761,840 | 1977 | 6,590,715 | 1976 | 6,432,074 | 1975 | 6,287,407 | 1974 | 6,159,574 | 1973 | 6,040,747 | 1972 | 5,924,803 | 1971 | 5,807,446 | 1970 | 5,693,555 | 1969 | 5,582,321 | 1968 | 5,463,823 | 1967 | 5,335,808 | 1966 | 5,199,884 | 1965 | 5,057,632 | 1964 | 4,909,659 | 1963 | 4,760,124 | 1962 | 4,617,771 | 1961 | 4,492,510 | 1960 | 4,388,722 |
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