| Year | Value | | 2022 | 5,362,950 | | 2021 | 5,380,860 | | 2020 | 5,396,092 | | 2019 | 5,404,286 | | 2018 | 5,412,989 | | 2017 | 5,416,892 | | 2016 | 5,406,296 | | 2015 | 5,397,007 | | 2014 | 5,402,981 | | 2013 | 5,420,253 | | 2012 | 5,442,522 | | 2011 | 5,459,251 | | 2010 | 5,452,075 | | 2009 | 5,426,458 | | 2008 | 5,391,896 | | 2007 | 5,348,757 | | 2006 | 5,302,923 | | 2005 | 5,257,553 | | 2004 | 5,216,798 | | 2003 | 5,188,048 | | 2002 | 5,170,729 | | 2001 | 5,153,671 | | 2000 | 5,132,445 | | 1999 | 5,100,831 | | 1998 | 5,062,799 | | 1997 | 5,024,742 | | 1996 | 4,990,439 | | 1995 | 4,967,430 | | 1994 | 4,949,662 | | 1993 | 4,935,529 | | 1992 | 4,919,318 | | 1991 | 4,883,116 | | 1990 | 4,812,376 | | 1989 | 4,713,928 | | 1988 | 4,603,812 | | 1987 | 4,484,861 | | 1986 | 4,366,711 | | 1985 | 4,262,725 | | 1984 | 4,171,587 | | 1983 | 4,087,006 | | 1982 | 4,005,750 | | 1981 | 3,921,237 | | 1980 | 3,820,698 | | 1979 | 3,700,080 | | 1978 | 3,570,531 | | 1977 | 3,439,790 | | 1976 | 3,309,541 | | 1975 | 3,182,660 | | 1974 | 3,060,914 | | 1973 | 2,944,146 | | 1972 | 2,832,084 | | 1971 | 2,725,122 | | 1970 | 2,622,615 | | 1969 | 2,526,842 | | 1968 | 2,440,909 | | 1967 | 2,356,979 | | 1966 | 2,270,045 | | 1965 | 2,186,171 | | 1964 | 2,105,634 | | 1963 | 2,026,065 | | 1962 | 1,955,115 | | 1961 | 1,895,479 | | 1960 | 1,837,867 |
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