| Year | Value | | 2022 | 11,406,819 | | 2021 | 11,060,744 | | 2020 | 10,718,339 | | 2019 | 10,387,581 | | 2018 | 10,068,477 | | 2017 | 9,754,475 | | 2016 | 9,445,909 | | 2015 | 9,149,561 | | 2014 | 8,866,537 | | 2013 | 8,590,210 | | 2012 | 8,343,041 | | 2011 | 8,102,832 | | 2010 | 7,844,770 | | 2009 | 7,593,666 | | 2008 | 7,350,044 | | 2007 | 7,112,186 | | 2006 | 6,880,921 | | 2005 | 6,656,944 | | 2004 | 6,440,171 | | 2003 | 6,232,629 | | 2002 | 6,034,984 | | 2001 | 5,847,171 | | 2000 | 5,670,841 | | 1999 | 5,505,559 | | 1998 | 5,353,275 | | 1997 | 5,219,023 | | 1996 | 5,101,668 | | 1995 | 4,992,990 | | 1994 | 4,885,980 | | 1993 | 4,781,508 | | 1992 | 4,681,556 | | 1991 | 4,585,961 | | 1990 | 4,494,384 | | 1989 | 4,406,898 | | 1988 | 4,326,758 | | 1987 | 4,253,662 | | 1986 | 4,182,097 | | 1985 | 4,106,882 | | 1984 | 4,026,528 | | 1983 | 3,941,968 | | 1982 | 3,857,012 | | 1981 | 3,774,534 | | 1980 | 3,693,961 | | 1979 | 3,616,792 | | 1978 | 3,544,739 | | 1977 | 3,476,736 | | 1976 | 3,413,931 | | 1975 | 3,355,058 | | 1974 | 3,297,551 | | 1973 | 3,242,023 | | 1972 | 3,189,289 | | 1971 | 3,140,775 | | 1970 | 3,094,657 | | 1969 | 3,049,862 | | 1968 | 3,007,067 | | 1967 | 2,965,711 | | 1966 | 2,926,082 | | 1965 | 2,887,474 | | 1964 | 2,849,486 | | 1963 | 2,812,494 | | 1962 | 2,776,335 | | 1961 | 2,740,787 | | 1960 | 2,705,849 |
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