| Year | Value | | 2022 | 8,287,376 | | 2021 | 8,190,472 | | 2020 | 8,053,008 | | 2019 | 7,937,922 | | 2018 | 7,840,933 | | 2017 | 7,723,966 | | 2016 | 7,615,837 | | 2015 | 7,546,187 | | 2014 | 7,483,898 | | 2013 | 7,405,121 | | 2012 | 7,323,049 | | 2011 | 7,231,729 | | 2010 | 7,128,138 | | 2009 | 7,036,077 | | 2008 | 7,010,466 | | 2007 | 7,010,085 | | 2006 | 6,994,316 | | 2005 | 6,954,769 | | 2004 | 6,866,076 | | 2003 | 6,756,292 | | 2002 | 6,624,658 | | 2001 | 6,474,467 | | 2000 | 6,312,124 | | 1999 | 6,144,493 | | 1998 | 5,990,972 | | 1997 | 5,856,351 | | 1996 | 5,722,632 | | 1995 | 5,579,630 | | 1994 | 5,429,746 | | 1993 | 5,273,066 | | 1992 | 5,106,294 | | 1991 | 4,942,934 | | 1990 | 4,778,263 | | 1989 | 4,601,179 | | 1988 | 4,427,228 | | 1987 | 4,263,265 | | 1986 | 4,119,511 | | 1985 | 3,993,918 | | 1984 | 3,878,635 | | 1983 | 3,770,907 | | 1982 | 3,674,836 | | 1981 | 3,589,854 | | 1980 | 3,513,446 | | 1979 | 3,442,367 | | 1978 | 3,364,236 | | 1977 | 3,270,386 | | 1976 | 3,164,406 | | 1975 | 3,043,176 | | 1974 | 2,908,306 | | 1973 | 2,784,110 | | 1972 | 2,697,256 | | 1971 | 2,708,433 | | 1970 | 2,738,855 | | 1969 | 2,724,398 | | 1968 | 2,710,459 | | 1967 | 2,671,296 | | 1966 | 2,613,002 | | 1965 | 2,550,111 | | 1964 | 2,487,900 | | 1963 | 2,431,673 | | 1962 | 2,380,200 | | 1961 | 2,330,327 | | 1960 | 2,280,551 |
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