| Year | Value | | 2022 | 6,126,364 | | 2021 | 6,058,547 | | 2020 | 5,992,275 | | 2019 | 5,916,395 | | 2018 | 5,832,721 | | 2017 | 5,748,534 | | 2016 | 5,663,718 | | 2015 | 5,578,609 | | 2014 | 5,493,370 | | 2013 | 5,407,879 | | 2012 | 5,322,361 | | 2011 | 5,236,810 | | 2010 | 5,151,373 | | 2009 | 5,066,350 | | 2008 | 4,981,806 | | 2007 | 4,897,753 | | 2006 | 4,814,077 | | 2005 | 4,731,985 | | 2004 | 4,651,928 | | 2003 | 4,573,038 | | 2002 | 4,495,206 | | 2001 | 4,418,319 | | 2000 | 4,339,846 | | 1999 | 4,259,118 | | 1998 | 4,178,700 | | 1997 | 4,099,171 | | 1996 | 4,019,794 | | 1995 | 3,940,256 | | 1994 | 3,860,430 | | 1993 | 3,779,539 | | 1992 | 3,700,608 | | 1991 | 3,624,585 | | 1990 | 3,549,041 | | 1989 | 3,474,310 | | 1988 | 3,400,530 | | 1987 | 3,327,883 | | 1986 | 3,256,758 | | 1985 | 3,187,147 | | 1984 | 3,118,854 | | 1983 | 3,051,776 | | 1982 | 2,985,628 | | 1981 | 2,920,137 | | 1980 | 2,855,272 | | 1979 | 2,791,051 | | 1978 | 2,727,627 | | 1977 | 2,665,352 | | 1976 | 2,604,537 | | 1975 | 2,545,323 | | 1974 | 2,487,398 | | 1973 | 2,430,744 | | 1972 | 2,375,760 | | 1971 | 2,322,303 | | 1970 | 2,270,363 | | 1969 | 2,219,978 | | 1968 | 2,171,087 | | 1967 | 2,123,704 | | 1966 | 2,077,758 | | 1965 | 2,033,201 | | 1964 | 1,989,946 | | 1963 | 1,947,957 | | 1962 | 1,907,104 | | 1961 | 1,867,352 | | 1960 | 1,828,792 |
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