Year | Value | 2022 | 28,214,852 | 2021 | 27,125,443 | 2020 | 26,038,743 | 2019 | 24,994,593 | 2018 | 24,035,525 | 2017 | 23,180,985 | 2016 | 22,437,232 | 2015 | 21,775,176 | 2014 | 21,171,100 | 2013 | 20,611,957 | 2012 | 20,069,275 | 2011 | 19,530,224 | 2010 | 18,993,786 | 2009 | 18,461,599 | 2008 | 17,937,225 | 2007 | 17,425,326 | 2006 | 16,927,529 | 2005 | 16,443,691 | 2004 | 15,971,027 | 2003 | 15,509,485 | 2002 | 15,056,856 | 2001 | 14,614,579 | 2000 | 14,191,774 | 1999 | 13,790,623 | 1998 | 13,409,664 | 1997 | 13,052,060 | 1996 | 12,712,926 | 1995 | 12,366,067 | 1994 | 11,986,109 | 1993 | 11,601,457 | 1992 | 11,266,507 | 1991 | 10,977,103 | 1990 | 10,699,615 | 1989 | 10,445,294 | 1988 | 10,213,942 | 1987 | 9,954,960 | 1986 | 9,665,457 | 1985 | 9,371,617 | 1984 | 9,093,266 | 1983 | 8,848,366 | 1982 | 8,624,337 | 1981 | 8,412,733 | 1980 | 8,220,947 | 1979 | 8,047,771 | 1978 | 7,878,029 | 1977 | 7,718,680 | 1976 | 7,566,926 | 1975 | 7,410,082 | 1974 | 7,252,247 | 1973 | 7,091,952 | 1972 | 6,932,674 | 1971 | 6,773,688 | 1970 | 6,612,473 | 1969 | 6,456,496 | 1968 | 6,307,889 | 1967 | 6,164,589 | 1966 | 6,027,449 | 1965 | 5,895,109 | 1964 | 5,766,746 | 1963 | 5,641,039 | 1962 | 5,516,473 | 1961 | 5,393,391 | 1960 | 5,271,769 |
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