| Year | Value | | 2022 | 8,468,316 | | 2021 | 8,376,956 | | 2020 | 8,281,334 | | 2019 | 8,186,482 | | 2018 | 8,094,239 | | 2017 | 7,996,341 | | 2016 | 7,892,686 | | 2015 | 7,788,391 | | 2014 | 7,684,470 | | 2013 | 7,578,172 | | 2012 | 7,471,081 | | 2011 | 7,364,277 | | 2010 | 7,258,651 | | 2009 | 7,154,373 | | 2008 | 7,050,210 | | 2007 | 6,939,365 | | 2006 | 6,824,167 | | 2005 | 6,711,926 | | 2004 | 6,600,114 | | 2003 | 6,488,659 | | 2002 | 6,378,217 | | 2001 | 6,269,097 | | 2000 | 6,162,331 | | 1999 | 6,055,381 | | 1998 | 5,938,327 | | 1997 | 5,817,046 | | 1996 | 5,695,203 | | 1995 | 5,566,038 | | 1994 | 5,427,475 | | 1993 | 5,249,118 | | 1992 | 5,024,695 | | 1991 | 4,823,655 | | 1990 | 4,660,876 | | 1989 | 4,501,727 | | 1988 | 4,356,677 | | 1987 | 4,214,473 | | 1986 | 4,065,209 | | 1985 | 3,925,641 | | 1984 | 3,804,093 | | 1983 | 3,677,619 | | 1982 | 3,545,857 | | 1981 | 3,417,502 | | 1980 | 3,334,177 | | 1979 | 3,255,563 | | 1978 | 3,198,363 | | 1977 | 3,228,543 | | 1976 | 3,348,247 | | 1975 | 3,504,525 | | 1974 | 3,547,006 | | 1973 | 3,501,198 | | 1972 | 3,442,548 | | 1971 | 3,391,257 | | 1970 | 3,379,892 | | 1969 | 3,355,573 | | 1968 | 3,290,683 | | 1967 | 3,225,825 | | 1966 | 3,160,909 | | 1965 | 3,095,568 | | 1964 | 3,029,485 | | 1963 | 2,964,747 | | 1962 | 2,901,294 | | 1961 | 2,838,198 | | 1960 | 2,775,913 |
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