| Year | Value | | 2022 | 7,816,695 | | 2021 | 7,547,729 | | 2020 | 7,270,437 | | 2019 | 6,996,460 | | 2018 | 6,724,245 | | 2017 | 6,457,759 | | 2016 | 6,226,848 | | 2015 | 6,028,232 | | 2014 | 5,828,405 | | 2013 | 5,617,505 | | 2012 | 5,402,407 | | 2011 | 5,179,382 | | 2010 | 4,945,147 | | 2009 | 4,711,985 | | 2008 | 4,493,289 | | 2007 | 4,293,895 | | 2006 | 4,107,745 | | 2005 | 3,929,536 | | 2004 | 3,757,781 | | 2003 | 3,591,292 | | 2002 | 3,431,169 | | 2001 | 3,286,344 | | 2000 | 3,162,389 | | 1999 | 3,062,527 | | 1998 | 2,988,042 | | 1997 | 2,930,013 | | 1996 | 2,879,683 | | 1995 | 2,840,443 | | 1994 | 2,810,352 | | 1993 | 2,775,603 | | 1992 | 2,736,361 | | 1991 | 2,698,491 | | 1990 | 2,664,915 | | 1989 | 2,608,408 | | 1988 | 2,557,854 | | 1987 | 2,503,483 | | 1986 | 2,442,737 | | 1985 | 2,381,820 | | 1984 | 2,321,123 | | 1983 | 2,257,601 | | 1982 | 2,194,812 | | 1981 | 2,135,605 | | 1980 | 2,076,282 | | 1979 | 2,012,190 | | 1978 | 1,948,931 | | 1977 | 1,888,929 | | 1976 | 1,820,642 | | 1975 | 1,750,423 | | 1974 | 1,695,218 | | 1973 | 1,652,836 | | 1972 | 1,616,819 | | 1971 | 1,584,967 | | 1970 | 1,556,241 | | 1969 | 1,530,202 | | 1968 | 1,506,624 | | 1967 | 1,484,414 | | 1966 | 1,462,267 | | 1965 | 1,441,900 | | 1964 | 1,422,330 | | 1963 | 1,399,076 | | 1962 | 1,371,177 | | 1961 | 1,340,972 | | 1960 | 1,312,532 |
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