| Year | Value | | 2022 | 6,971,642 | | 2021 | 6,820,507 | | 2020 | 6,667,059 | | 2019 | 6,471,629 | | 2018 | 6,255,225 | | 2017 | 6,063,137 | | 2016 | 5,895,989 | | 2015 | 5,736,697 | | 2014 | 5,589,863 | | 2013 | 5,447,668 | | 2012 | 5,284,407 | | 2011 | 5,107,839 | | 2010 | 4,934,882 | | 2009 | 4,772,341 | | 2008 | 4,625,272 | | 2007 | 4,491,521 | | 2006 | 4,365,679 | | 2005 | 4,244,946 | | 2004 | 4,130,022 | | 2003 | 4,022,477 | | 2002 | 3,922,246 | | 2001 | 3,831,376 | | 2000 | 3,750,814 | | 1999 | 3,679,281 | | 1998 | 3,615,614 | | 1997 | 3,558,026 | | 1996 | 3,500,544 | | 1995 | 3,442,605 | | 1994 | 3,393,957 | | 1993 | 3,343,896 | | 1992 | 3,282,502 | | 1991 | 3,216,745 | | 1990 | 3,149,804 | | 1989 | 3,082,226 | | 1988 | 3,017,149 | | 1987 | 2,951,407 | | 1986 | 2,881,471 | | 1985 | 2,813,458 | | 1984 | 2,748,859 | | 1983 | 2,689,772 | | 1982 | 2,628,340 | | 1981 | 2,560,675 | | 1980 | 2,497,371 | | 1979 | 2,432,520 | | 1978 | 2,361,794 | | 1977 | 2,296,399 | | 1976 | 2,235,517 | | 1975 | 2,174,129 | | 1974 | 2,113,552 | | 1973 | 2,054,737 | | 1972 | 1,998,591 | | 1971 | 1,944,629 | | 1970 | 1,891,916 | | 1969 | 1,840,788 | | 1968 | 1,790,729 | | 1967 | 1,742,330 | | 1966 | 1,696,406 | | 1965 | 1,652,438 | | 1964 | 1,610,175 | | 1963 | 1,570,014 | | 1962 | 1,532,024 | | 1961 | 1,495,674 | | 1960 | 1,461,358 |
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