| Year | Value | | 2022 | 9,952,787 | | 2021 | 9,750,064 | | 2020 | 9,543,207 | | 2019 | 9,337,003 | | 2018 | 9,128,132 | | 2017 | 8,925,525 | | 2016 | 8,725,318 | | 2015 | 8,524,063 | | 2014 | 8,326,348 | | 2013 | 8,136,610 | | 2012 | 7,956,382 | | 2011 | 7,784,819 | | 2010 | 7,621,779 | | 2009 | 7,468,596 | | 2008 | 7,324,627 | | 2007 | 7,188,391 | | 2006 | 7,057,417 | | 2005 | 6,929,145 | | 2004 | 6,801,204 | | 2003 | 6,672,492 | | 2002 | 6,541,755 | | 2001 | 6,408,810 | | 2000 | 6,272,998 | | 1999 | 6,189,565 | | 1998 | 6,156,805 | | 1997 | 6,117,069 | | 1996 | 6,035,600 | | 1995 | 5,916,173 | | 1994 | 5,803,993 | | 1993 | 5,717,806 | | 1992 | 5,656,208 | | 1991 | 5,556,306 | | 1990 | 5,417,860 | | 1989 | 5,264,332 | | 1988 | 5,100,020 | | 1987 | 4,946,293 | | 1986 | 4,798,281 | | 1985 | 4,660,598 | | 1984 | 4,529,501 | | 1983 | 4,401,502 | | 1982 | 4,278,908 | | 1981 | 4,160,745 | | 1980 | 4,045,965 | | 1979 | 3,932,682 | | 1978 | 3,818,114 | | 1977 | 3,703,010 | | 1976 | 3,590,606 | | 1975 | 3,482,125 | | 1974 | 3,377,758 | | 1973 | 3,277,487 | | 1972 | 3,180,461 | | 1971 | 3,085,961 | | 1970 | 2,993,019 | | 1969 | 2,899,854 | | 1968 | 2,806,566 | | 1967 | 2,714,959 | | 1966 | 2,625,653 | | 1965 | 2,538,295 | | 1964 | 2,452,671 | | 1963 | 2,368,868 | | 1962 | 2,287,181 | | 1961 | 2,208,026 | | 1960 | 2,131,992 |
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