| Year | Value | | 2022 | 7,529,475 | | 2021 | 7,425,057 | | 2020 | 7,319,399 | | 2019 | 7,212,053 | | 2018 | 7,105,006 | | 2017 | 6,997,917 | | 2016 | 6,891,363 | | 2015 | 6,787,419 | | 2014 | 6,691,454 | | 2013 | 6,600,742 | | 2012 | 6,508,803 | | 2011 | 6,416,327 | | 2010 | 6,323,418 | | 2009 | 6,229,930 | | 2008 | 6,135,861 | | 2007 | 6,041,348 | | 2006 | 5,946,593 | | 2005 | 5,852,970 | | 2004 | 5,768,167 | | 2003 | 5,689,065 | | 2002 | 5,606,101 | | 2001 | 5,519,707 | | 2000 | 5,430,853 | | 1999 | 5,340,056 | | 1998 | 5,246,922 | | 1997 | 5,150,538 | | 1996 | 5,043,914 | | 1995 | 4,927,432 | | 1994 | 4,807,950 | | 1993 | 4,685,296 | | 1992 | 4,561,106 | | 1991 | 4,437,225 | | 1990 | 4,314,443 | | 1989 | 4,193,532 | | 1988 | 4,074,961 | | 1987 | 3,959,697 | | 1986 | 3,848,390 | | 1985 | 3,741,604 | | 1984 | 3,639,956 | | 1983 | 3,543,861 | | 1982 | 3,453,691 | | 1981 | 3,370,993 | | 1980 | 3,297,519 | | 1979 | 3,233,700 | | 1978 | 3,177,945 | | 1977 | 3,125,742 | | 1976 | 3,072,017 | | 1975 | 3,012,720 | | 1974 | 2,946,882 | | 1973 | 2,877,561 | | 1972 | 2,808,290 | | 1971 | 2,740,732 | | 1970 | 2,675,283 | | 1969 | 2,612,111 | | 1968 | 2,551,070 | | 1967 | 2,491,927 | | 1966 | 2,434,861 | | 1965 | 2,379,456 | | 1964 | 2,325,513 | | 1963 | 2,273,219 | | 1962 | 2,221,615 | | 1961 | 2,171,141 | | 1960 | 2,122,532 |
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