| Year | Value | | 2019 | 5,891,256 | | 2018 | 5,731,245 | | 2017 | 5,574,303 | | 2016 | 5,420,567 | | 2015 | 5,270,127 | | 2014 | 5,122,908 | | 2013 | 4,978,893 | | 2012 | 4,838,352 | | 2011 | 4,701,607 | | 2010 | 4,568,836 | | 2009 | 4,440,263 | | 2008 | 4,315,625 | | 2007 | 4,194,027 | | 2006 | 4,074,235 | | 2005 | 3,955,403 | | 2004 | 3,836,993 | | 2003 | 3,719,314 | | 2002 | 3,603,444 | | 2001 | 3,490,952 | | 2000 | 3,382,860 | | 1999 | 3,279,808 | | 1998 | 3,181,233 | | 1997 | 3,085,567 | | 1996 | 2,990,565 | | 1995 | 2,894,761 | | 1994 | 2,797,457 | | 1993 | 2,699,502 | | 1992 | 2,602,819 | | 1991 | 2,510,181 | | 1990 | 2,423,543 | | 1989 | 2,343,544 | | 1988 | 2,269,539 | | 1987 | 2,200,613 | | 1986 | 2,135,321 | | 1985 | 2,072,577 | | 1984 | 2,012,142 | | 1983 | 1,954,270 | | 1982 | 1,898,838 | | 1981 | 1,845,824 | | 1980 | 1,795,186 | | 1979 | 1,746,755 | | 1978 | 1,700,363 | | 1977 | 1,656,027 | | 1976 | 1,613,797 | | 1975 | 1,573,664 | | 1974 | 1,535,628 | | 1973 | 1,499,542 | | 1972 | 1,465,180 | | 1971 | 1,432,232 | | 1970 | 1,400,497 | | 1969 | 1,369,845 | | 1968 | 1,340,314 | | 1967 | 1,312,016 | | 1966 | 1,285,185 | | 1965 | 1,259,940 | | 1964 | 1,236,327 | | 1963 | 1,214,260 | | 1962 | 1,193,682 | | 1961 | 1,174,505 | | 1960 | 1,156,653 |
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