| Year | Value | | 2022 | 13,944,972 | | 2021 | 13,600,535 | | 2020 | 13,264,169 | | 2019 | 12,929,424 | | 2018 | 12,600,637 | | 2017 | 12,275,633 | | 2016 | 11,956,537 | | 2015 | 11,646,213 | | 2014 | 11,343,487 | | 2013 | 11,077,831 | | 2012 | 10,845,584 | | 2011 | 10,618,615 | | 2010 | 10,402,077 | | 2009 | 10,193,879 | | 2008 | 9,990,049 | | 2007 | 9,789,603 | | 2006 | 9,590,427 | | 2005 | 9,390,312 | | 2004 | 9,188,308 | | 2003 | 8,983,181 | | 2002 | 8,774,649 | | 2001 | 8,557,174 | | 2000 | 8,330,187 | | 1999 | 8,098,881 | | 1998 | 7,851,363 | | 1997 | 7,586,769 | | 1996 | 7,322,218 | | 1995 | 7,064,167 | | 1994 | 6,813,327 | | 1993 | 6,568,705 | | 1992 | 6,328,300 | | 1991 | 6,092,650 | | 1990 | 5,862,374 | | 1989 | 5,637,845 | | 1988 | 5,432,217 | | 1987 | 5,246,142 | | 1986 | 5,065,248 | | 1985 | 4,886,725 | | 1984 | 4,710,005 | | 1983 | 4,535,162 | | 1982 | 4,363,304 | | 1981 | 4,195,695 | | 1980 | 4,033,209 | | 1979 | 3,876,950 | | 1978 | 3,727,906 | | 1977 | 3,585,875 | | 1976 | 3,451,561 | | 1975 | 3,313,314 | | 1974 | 3,169,899 | | 1973 | 3,033,443 | | 1972 | 2,904,123 | | 1971 | 2,782,354 | | 1970 | 2,668,943 | | 1969 | 2,563,878 | | 1968 | 2,465,982 | | 1967 | 2,373,280 | | 1966 | 2,284,488 | | 1965 | 2,199,374 | | 1964 | 2,117,673 | | 1963 | 2,039,339 | | 1962 | 1,964,454 | | 1961 | 1,893,505 | | 1960 | 1,827,109 |
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