Year | Value | 2022 | 19,621,881 | 2021 | 19,038,233 | 2020 | 18,455,138 | 2019 | 17,875,345 | 2018 | 17,306,081 | 2017 | 16,745,249 | 2016 | 16,180,685 | 2015 | 15,615,136 | 2014 | 15,062,212 | 2013 | 14,519,202 | 2012 | 13,986,163 | 2011 | 13,468,281 | 2010 | 12,969,707 | 2009 | 12,483,116 | 2008 | 12,005,167 | 2007 | 11,538,602 | 2006 | 11,084,549 | 2005 | 10,642,858 | 2004 | 10,214,975 | 2003 | 9,801,125 | 2002 | 9,398,332 | 2001 | 9,007,429 | 2000 | 8,638,858 | 1999 | 8,281,305 | 1998 | 7,938,405 | 1997 | 7,609,369 | 1996 | 7,297,486 | 1995 | 6,999,964 | 1994 | 6,712,392 | 1993 | 6,431,766 | 1992 | 6,156,359 | 1991 | 5,889,018 | 1990 | 5,629,035 | 1989 | 5,376,584 | 1988 | 5,135,674 | 1987 | 4,907,599 | 1986 | 4,693,228 | 1985 | 4,490,779 | 1984 | 4,297,482 | 1983 | 4,134,407 | 1982 | 3,978,614 | 1981 | 3,833,404 | 1980 | 3,697,567 | 1979 | 3,562,720 | 1978 | 3,428,674 | 1977 | 3,300,910 | 1976 | 3,181,076 | 1975 | 3,067,957 | 1974 | 2,958,732 | 1973 | 2,853,574 | 1972 | 2,752,841 | 1971 | 2,657,424 | 1970 | 2,566,228 | 1969 | 2,457,179 | 1968 | 2,345,297 | 1967 | 2,239,212 | 1966 | 2,137,720 | 1965 | 2,040,453 | 1964 | 1,947,333 | 1963 | 1,858,221 | 1962 | 1,773,116 | 1961 | 1,691,736 | 1960 | 1,607,064 |
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