| Year | Value | | 2022 | 4,037,403 | | 2021 | 4,262,191 | | 2020 | 4,593,499 | | 2019 | 4,988,196 | | 2018 | 5,391,557 | | 2017 | 5,787,587 | | 2016 | 6,092,952 | | 2015 | 6,253,808 | | 2014 | 6,308,359 | | 2013 | 6,329,728 | | 2012 | 6,268,592 | | 2011 | 6,114,967 | | 2010 | 6,005,140 | | 2009 | 5,919,403 | | 2008 | 5,771,647 | | 2007 | 5,624,068 | | 2006 | 5,540,112 | | 2005 | 5,474,591 | | 2004 | 5,416,282 | | 2003 | 5,365,216 | | 2002 | 5,323,086 | | 2001 | 5,280,502 | | 2000 | 5,217,565 | | 1999 | 5,147,533 | | 1998 | 5,058,949 | | 1997 | 4,947,556 | | 1996 | 4,858,964 | | 1995 | 4,828,645 | | 1994 | 4,857,442 | | 1993 | 5,023,313 | | 1992 | 5,309,767 | | 1991 | 5,651,686 | | 1990 | 6,002,080 | | 1989 | 6,318,006 | | 1988 | 6,529,983 | | 1987 | 6,661,900 | | 1986 | 6,692,092 | | 1985 | 6,644,180 | | 1984 | 6,583,630 | | 1983 | 6,483,884 | | 1982 | 6,372,178 | | 1981 | 6,294,449 | | 1980 | 6,191,453 | | 1979 | 6,056,177 | | 1978 | 5,916,515 | | 1977 | 5,758,215 | | 1976 | 5,565,321 | | 1975 | 5,165,893 | | 1974 | 4,514,415 | | 1973 | 3,826,144 | | 1972 | 3,276,624 | | 1971 | 3,065,244 | | 1970 | 3,341,538 | | 1969 | 4,005,201 | | 1968 | 4,850,828 | | 1967 | 5,645,314 | | 1966 | 6,044,660 | | 1965 | 6,050,974 | | 1964 | 5,784,591 | | 1963 | 5,342,083 | | 1962 | 4,974,554 | | 1961 | 4,793,376 | | 1960 | 4,866,505 |
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