Year | Value | 2022 | 44,699,241 | 2021 | 43,818,596 | 2020 | 42,710,496 | 2019 | 41,656,977 | 2018 | 40,735,140 | 2017 | 39,916,460 | 2016 | 39,086,613 | 2015 | 38,274,195 | 2014 | 37,551,025 | 2013 | 36,872,486 | 2012 | 36,187,560 | 2011 | 35,523,804 | 2010 | 34,869,888 | 2009 | 34,176,478 | 2008 | 33,468,294 | 2007 | 32,748,872 | 2006 | 31,964,186 | 2005 | 31,129,673 | 2004 | 30,299,300 | 2003 | 29,464,613 | 2002 | 28,625,440 | 2001 | 27,826,516 | 2000 | 27,081,514 | 1999 | 26,347,733 | 1998 | 25,630,408 | 1997 | 24,981,988 | 1996 | 24,406,521 | 1995 | 23,810,568 | 1994 | 23,061,974 | 1993 | 22,321,541 | 1992 | 21,675,216 | 1991 | 21,051,315 | 1990 | 20,510,415 | 1989 | 19,934,542 | 1988 | 19,482,007 | 1987 | 19,084,070 | 1986 | 18,692,755 | 1985 | 18,299,642 | 1984 | 17,893,135 | 1983 | 17,482,110 | 1982 | 17,067,059 | 1981 | 16,667,068 | 1980 | 16,292,734 | 1979 | 15,887,390 | 1978 | 15,466,003 | 1977 | 15,079,439 | 1976 | 14,704,927 | 1975 | 14,331,422 | 1974 | 13,961,118 | 1973 | 13,576,858 | 1972 | 13,214,361 | 1971 | 12,880,821 | 1970 | 12,505,685 | 1969 | 12,110,056 | 1968 | 11,759,163 | 1967 | 11,457,675 | 1966 | 11,235,968 | 1965 | 11,129,332 | 1964 | 11,103,919 | 1963 | 11,130,482 | 1962 | 11,175,964 | 1961 | 11,123,143 | 1960 | 10,938,827 |
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