Year | Value | 2022 | 17,642,433 | 2021 | 16,883,351 | 2020 | 16,373,107 | 2019 | 15,943,238 | 2018 | 15,607,542 | 2017 | 15,396,022 | 2016 | 15,149,089 | 2015 | 14,867,860 | 2014 | 14,660,402 | 2013 | 14,465,367 | 2012 | 14,157,925 | 2011 | 13,743,718 | 2010 | 13,312,880 | 2009 | 12,870,508 | 2008 | 12,374,039 | 2007 | 11,900,940 | 2006 | 11,476,072 | 2005 | 11,048,061 | 2004 | 10,650,085 | 2003 | 10,240,045 | 2002 | 9,788,039 | 2001 | 9,389,398 | 2000 | 8,992,123 | 1999 | 8,526,028 | 1998 | 8,064,170 | 1997 | 7,669,366 | 1996 | 7,312,798 | 1995 | 6,974,267 | 1994 | 6,699,258 | 1993 | 6,496,238 | 1992 | 6,284,894 | 1991 | 6,042,537 | 1990 | 5,804,930 | 1989 | 5,555,361 | 1988 | 5,287,376 | 1987 | 5,047,637 | 1986 | 4,851,056 | 1985 | 4,667,465 | 1984 | 4,476,402 | 1983 | 4,300,479 | 1982 | 4,152,951 | 1981 | 4,007,736 | 1980 | 3,847,128 | 1979 | 3,660,831 | 1978 | 3,451,824 | 1977 | 3,248,730 | 1976 | 3,064,542 | 1975 | 2,904,900 | 1974 | 2,783,028 | 1973 | 2,675,906 | 1972 | 2,566,399 | 1971 | 2,459,796 | 1970 | 2,354,328 | 1969 | 2,264,413 | 1968 | 2,191,676 | 1967 | 2,127,282 | 1966 | 2,082,008 | 1965 | 2,056,294 | 1964 | 2,027,687 | 1963 | 1,990,715 | 1962 | 1,959,349 | 1961 | 1,967,473 | 1960 | 2,045,934 |
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