| Year | Value | | 2022 | 8,416,187 | | 2021 | 8,160,090 | | 2020 | 7,906,325 | | 2019 | 7,668,289 | | 2018 | 7,455,193 | | 2017 | 7,254,217 | | 2016 | 7,069,773 | | 2015 | 6,889,363 | | 2014 | 6,712,788 | | 2013 | 6,539,795 | | 2012 | 6,355,358 | | 2011 | 6,156,026 | | 2010 | 5,948,448 | | 2009 | 5,751,931 | | 2008 | 5,578,380 | | 2007 | 5,427,319 | | 2006 | 5,289,141 | | 2005 | 5,161,729 | | 2004 | 5,040,296 | | 2003 | 4,929,531 | | 2002 | 4,844,636 | | 2001 | 4,744,919 | | 2000 | 4,603,275 | | 1999 | 4,482,419 | | 1998 | 4,393,989 | | 1997 | 4,306,297 | | 1996 | 4,218,843 | | 1995 | 4,123,959 | | 1994 | 4,035,283 | | 1993 | 3,945,686 | | 1992 | 3,876,878 | | 1991 | 3,792,924 | | 1990 | 3,653,965 | | 1989 | 3,507,834 | | 1988 | 3,354,859 | | 1987 | 3,191,758 | | 1986 | 3,025,988 | | 1985 | 2,860,791 | | 1984 | 2,726,420 | | 1983 | 2,622,792 | | 1982 | 2,512,307 | | 1981 | 2,393,313 | | 1980 | 2,279,072 | | 1979 | 2,192,989 | | 1978 | 2,132,886 | | 1977 | 2,076,560 | | 1976 | 2,017,054 | | 1975 | 1,957,507 | | 1974 | 1,897,062 | | 1973 | 1,837,694 | | 1972 | 1,782,774 | | 1971 | 1,732,946 | | 1970 | 1,685,815 | | 1969 | 1,640,575 | | 1968 | 1,599,565 | | 1967 | 1,562,390 | | 1966 | 1,526,824 | | 1965 | 1,491,944 | | 1964 | 1,458,143 | | 1963 | 1,425,098 | | 1962 | 1,392,905 | | 1961 | 1,362,809 | | 1960 | 1,330,964 |
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