Year | Value | 2022 | 24,411,154 | 2021 | 24,330,204 | 2020 | 24,204,196 | 2019 | 24,046,897 | 2018 | 23,875,424 | 2017 | 23,711,903 | 2016 | 23,550,452 | 2015 | 23,388,058 | 2014 | 23,218,591 | 2013 | 23,026,955 | 2012 | 22,815,783 | 2011 | 22,581,053 | 2010 | 22,314,328 | 2009 | 22,047,833 | 2008 | 21,765,061 | 2007 | 21,454,741 | 2006 | 21,127,628 | 2005 | 20,797,149 | 2004 | 20,455,669 | 2003 | 20,122,722 | 2002 | 19,810,514 | 2001 | 19,505,802 | 2000 | 19,207,531 | 1999 | 18,923,583 | 1998 | 18,641,358 | 1997 | 18,356,279 | 1996 | 18,088,014 | 1995 | 17,842,297 | 1994 | 17,609,768 | 1993 | 17,371,737 | 1992 | 17,107,540 | 1991 | 16,802,227 | 1990 | 16,451,890 | 1989 | 16,075,543 | 1988 | 15,683,417 | 1987 | 15,274,125 | 1986 | 14,858,623 | 1985 | 14,440,277 | 1984 | 14,024,082 | 1983 | 13,610,987 | 1982 | 13,205,056 | 1981 | 12,813,296 | 1980 | 12,432,560 | 1979 | 12,060,935 | 1978 | 11,681,499 | 1977 | 11,282,446 | 1976 | 10,885,718 | 1975 | 10,502,127 | 1974 | 10,126,690 | 1973 | 9,777,656 | 1972 | 9,474,390 | 1971 | 9,213,819 | 1970 | 8,973,412 | 1969 | 8,740,375 | 1968 | 8,517,397 | 1967 | 8,295,383 | 1966 | 8,075,227 | 1965 | 7,858,402 | 1964 | 7,644,843 | 1963 | 7,446,315 | 1962 | 7,269,563 | 1961 | 7,109,864 | 1960 | 6,970,324 |
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