Year | Value | 2022 | 24,410,808 | 2021 | 24,200,254 | 2020 | 23,960,226 | 2019 | 23,683,575 | 2018 | 23,370,992 | 2017 | 23,015,578 | 2016 | 22,625,215 | 2015 | 22,214,885 | 2014 | 21,795,081 | 2013 | 21,382,673 | 2012 | 20,987,657 | 2011 | 20,607,181 | 2010 | 20,243,173 | 2009 | 19,909,333 | 2008 | 19,578,077 | 2007 | 19,269,221 | 2006 | 18,993,035 | 2005 | 18,746,986 | 2004 | 18,523,175 | 2003 | 18,302,598 | 2002 | 18,061,831 | 2001 | 17,783,476 | 2000 | 17,457,726 | 1999 | 17,081,917 | 1998 | 16,667,858 | 1997 | 16,228,151 | 1996 | 15,772,813 | 1995 | 15,312,110 | 1994 | 14,851,554 | 1993 | 14,390,682 | 1992 | 13,933,336 | 1991 | 13,488,220 | 1990 | 13,054,439 | 1989 | 12,625,667 | 1988 | 12,185,614 | 1987 | 11,729,383 | 1986 | 11,269,418 | 1985 | 10,811,094 | 1984 | 10,371,932 | 1983 | 9,979,807 | 1982 | 9,642,738 | 1981 | 9,352,321 | 1980 | 9,096,649 | 1979 | 8,859,147 | 1978 | 8,631,833 | 1977 | 8,410,441 | 1976 | 8,192,584 | 1975 | 7,984,399 | 1974 | 7,793,950 | 1973 | 7,628,866 | 1972 | 7,492,194 | 1971 | 7,372,928 | 1970 | 7,265,775 | 1969 | 7,164,477 | 1968 | 7,056,396 | 1967 | 6,934,853 | 1966 | 6,796,677 | 1965 | 6,642,716 | 1964 | 6,474,743 | 1963 | 6,293,380 | 1962 | 6,100,952 | 1961 | 5,903,075 | 1960 | 5,704,354 |
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