Year | Value | 2022 | 26,492,243 | 2021 | 26,299,296 | 2020 | 25,861,633 | 2019 | 25,378,513 | 2018 | 24,930,842 | 2017 | 24,455,790 | 2016 | 23,996,814 | 2015 | 23,635,101 | 2014 | 23,361,875 | 2013 | 23,080,637 | 2012 | 22,777,885 | 2011 | 22,391,699 | 2010 | 21,557,885 | 2009 | 20,320,391 | 2008 | 19,142,151 | 2007 | 18,099,570 | 2006 | 17,441,876 | 2005 | 17,581,936 | 2004 | 18,263,139 | 2003 | 19,030,774 | 2002 | 19,812,280 | 2001 | 20,281,301 | 2000 | 20,295,675 | 1999 | 19,965,443 | 1998 | 19,395,879 | 1997 | 18,847,805 | 1996 | 18,528,984 | 1995 | 18,516,199 | 1994 | 18,771,215 | 1993 | 19,195,947 | 1992 | 19,509,999 | 1991 | 19,520,568 | 1990 | 19,206,732 | 1989 | 18,642,601 | 1988 | 17,915,906 | 1987 | 17,118,577 | 1986 | 16,406,986 | 1985 | 15,819,455 | 1984 | 15,159,662 | 1983 | 14,269,654 | 1982 | 13,258,337 | 1981 | 12,302,977 | 1980 | 11,626,018 | 1979 | 11,604,267 | 1978 | 12,223,817 | 1977 | 13,172,665 | 1976 | 14,163,379 | 1975 | 14,892,751 | 1974 | 15,226,647 | 1973 | 15,262,832 | 1972 | 15,188,848 | 1971 | 15,078,339 | 1970 | 14,959,003 | 1969 | 14,780,958 | 1968 | 14,556,323 | 1967 | 14,307,115 | 1966 | 14,006,372 | 1965 | 13,699,468 | 1964 | 13,339,953 | 1963 | 12,907,497 | 1962 | 12,447,145 | 1961 | 12,017,384 | 1960 | 11,577,107 |
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