Year | Value | 2022 | 43,835,978 | 2021 | 43,496,643 | 2020 | 43,155,308 | 2019 | 42,772,045 | 2018 | 42,283,609 | 2017 | 41,715,123 | 2016 | 41,105,603 | 2015 | 40,336,099 | 2014 | 39,405,613 | 2013 | 38,640,588 | 2012 | 38,062,269 | 2011 | 37,559,635 | 2010 | 37,072,743 | 2009 | 36,554,728 | 2008 | 36,059,993 | 2007 | 35,569,016 | 2006 | 35,065,378 | 2005 | 34,551,612 | 2004 | 34,033,455 | 2003 | 33,525,382 | 2002 | 33,228,012 | 2001 | 32,888,440 | 2000 | 32,308,864 | 1999 | 31,759,367 | 1998 | 31,238,387 | 1997 | 30,733,747 | 1996 | 30,277,819 | 1995 | 29,863,681 | 1994 | 29,449,209 | 1993 | 29,325,118 | 1992 | 29,125,341 | 1991 | 28,427,220 | 1990 | 27,321,946 | 1989 | 26,240,665 | 1988 | 25,458,460 | 1987 | 24,648,094 | 1986 | 23,807,989 | 1985 | 22,964,786 | 1984 | 22,133,113 | 1983 | 21,313,380 | 1982 | 20,521,074 | 1981 | 19,574,777 | 1980 | 18,678,222 | 1979 | 18,026,297 | 1978 | 17,433,233 | 1977 | 16,890,402 | 1976 | 16,386,803 | 1975 | 15,913,627 | 1974 | 15,452,940 | 1973 | 15,009,757 | 1972 | 14,588,585 | 1971 | 14,183,729 | 1970 | 13,785,014 | 1969 | 13,394,993 | 1968 | 13,024,418 | 1967 | 12,668,971 | 1966 | 12,318,631 | 1965 | 11,970,547 | 1964 | 11,629,176 | 1963 | 11,301,097 | 1962 | 10,990,293 | 1961 | 10,695,491 | 1960 | 10,413,283 |
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