| Year | Value | | 2022 | 6,885,774 | | 2021 | 6,975,789 | | 2020 | 7,066,449 | | 2019 | 7,148,892 | | 2018 | 7,172,580 | | 2017 | 7,176,690 | | 2016 | 7,212,693 | | 2015 | 7,245,246 | | 2014 | 7,260,131 | | 2013 | 7,294,816 | | 2012 | 7,347,571 | | 2011 | 7,408,607 | | 2010 | 7,483,108 | | 2009 | 7,569,878 | | 2008 | 7,654,484 | | 2007 | 7,744,792 | | 2006 | 7,849,250 | | 2005 | 7,958,193 | | 2004 | 8,074,406 | | 2003 | 8,210,756 | | 2002 | 8,340,632 | | 2001 | 8,433,308 | | 2000 | 8,499,112 | | 1999 | 8,539,479 | | 1998 | 8,551,497 | | 1997 | 8,546,856 | | 1996 | 8,548,671 | | 1995 | 8,566,502 | | 1994 | 8,604,441 | | 1993 | 8,665,660 | | 1992 | 8,748,475 | | 1991 | 8,838,733 | | 1990 | 8,921,954 | | 1989 | 8,998,048 | | 1988 | 9,061,083 | | 1987 | 9,102,772 | | 1986 | 9,116,619 | | 1985 | 9,097,247 | | 1984 | 9,039,008 | | 1983 | 8,945,391 | | 1982 | 8,821,541 | | 1981 | 8,675,091 | | 1980 | 8,514,479 | | 1979 | 8,349,264 | | 1978 | 8,193,956 | | 1977 | 8,053,293 | | 1976 | 7,923,973 | | 1975 | 7,808,326 | | 1974 | 7,705,130 | | 1973 | 7,606,056 | | 1972 | 7,518,019 | | 1971 | 7,453,380 | | 1970 | 7,407,369 | | 1969 | 7,376,824 | | 1968 | 7,354,548 | | 1967 | 7,320,648 | | 1966 | 7,260,819 | | 1965 | 7,171,623 | | 1964 | 7,052,836 | | 1963 | 6,909,074 | | 1962 | 6,749,342 | | 1961 | 6,580,361 | | 1960 | 6,407,523 |
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