Year | Value | 2022 | 33,696,614 | 2021 | 32,981,641 | 2020 | 32,284,046 | 2019 | 31,546,691 | 2018 | 30,790,513 | 2017 | 30,034,389 | 2016 | 29,274,002 | 2015 | 28,516,545 | 2014 | 27,753,304 | 2013 | 26,984,002 | 2012 | 26,223,391 | 2011 | 25,475,610 | 2010 | 24,743,946 | 2009 | 24,029,589 | 2008 | 23,329,004 | 2007 | 22,641,538 | 2006 | 21,966,298 | 2005 | 21,320,671 | 2004 | 20,733,406 | 2003 | 20,188,799 | 2002 | 19,660,653 | 2001 | 19,143,457 | 2000 | 18,628,700 | 1999 | 18,114,552 | 1998 | 17,608,133 | 1997 | 17,108,681 | 1996 | 16,614,326 | 1995 | 16,103,339 | 1994 | 15,553,171 | 1993 | 14,988,047 | 1992 | 14,433,771 | 1991 | 13,895,851 | 1990 | 13,375,121 | 1989 | 12,872,362 | 1988 | 12,387,238 | 1987 | 11,915,563 | 1986 | 11,465,444 | 1985 | 11,036,918 | 1984 | 10,625,687 | 1983 | 10,237,391 | 1982 | 9,872,292 | 1981 | 9,529,105 | 1980 | 9,204,938 | 1979 | 8,899,922 | 1978 | 8,615,301 | 1977 | 8,348,182 | 1976 | 8,094,985 | 1975 | 7,855,657 | 1974 | 7,630,190 | 1973 | 7,417,736 | 1972 | 7,215,835 | 1971 | 7,024,196 | 1970 | 6,843,607 | 1969 | 6,673,981 | 1968 | 6,515,904 | 1967 | 6,368,014 | 1966 | 6,228,430 | 1965 | 6,097,298 | 1964 | 5,973,803 | 1963 | 5,860,197 | 1962 | 5,753,386 | 1961 | 5,646,668 | 1960 | 5,542,459 |
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