Year | Value | 2022 | 33,975,051 | 2021 | 33,006,350 | 2020 | 32,031,628 | 2019 | 31,042,226 | 2018 | 30,026,244 | 2017 | 28,973,098 | 2016 | 27,910,135 | 2015 | 26,821,586 | 2014 | 25,743,123 | 2013 | 24,753,569 | 2012 | 23,866,845 | 2011 | 23,082,458 | 2010 | 22,369,410 | 2009 | 21,705,524 | 2008 | 21,077,979 | 2007 | 20,462,896 | 2006 | 19,851,724 | 2005 | 19,251,500 | 2004 | 18,660,169 | 2003 | 18,077,349 | 2002 | 17,506,848 | 2001 | 16,942,198 | 2000 | 16,381,058 | 1999 | 15,836,200 | 1998 | 15,314,771 | 1997 | 14,828,109 | 1996 | 14,402,668 | 1995 | 14,021,853 | 1994 | 13,665,737 | 1993 | 13,349,286 | 1992 | 13,055,751 | 1991 | 12,749,101 | 1990 | 12,424,880 | 1989 | 12,075,709 | 1988 | 11,732,782 | 1987 | 11,431,815 | 1986 | 11,155,350 | 1985 | 10,923,876 | 1984 | 10,737,771 | 1983 | 10,549,611 | 1982 | 10,305,226 | 1981 | 10,010,477 | 1980 | 9,708,623 | 1979 | 9,415,506 | 1978 | 9,142,551 | 1977 | 8,902,495 | 1976 | 8,694,733 | 1975 | 8,491,740 | 1974 | 8,288,904 | 1973 | 8,096,046 | 1972 | 7,918,024 | 1971 | 7,751,418 | 1970 | 7,593,162 | 1969 | 7,444,430 | 1968 | 7,299,358 | 1967 | 7,156,496 | 1966 | 7,017,753 | 1965 | 6,881,830 | 1964 | 6,747,863 | 1963 | 6,617,206 | 1962 | 6,489,810 | 1961 | 6,365,716 | 1960 | 6,244,537 |
|