| Year | Value | | 2022 | 5,300,290 | | 2021 | 5,222,736 | | 2020 | 5,127,200 | | 2019 | 5,031,183 | | 2018 | 4,916,547 | | 2017 | 4,806,918 | | 2016 | 4,725,698 | | 2015 | 4,703,492 | | 2014 | 4,758,692 | | 2013 | 4,920,290 | | 2012 | 5,160,041 | | 2011 | 5,446,141 | | 2010 | 5,765,098 | | 2009 | 6,052,017 | | 2008 | 6,245,451 | | 2007 | 6,355,186 | | 2006 | 6,380,630 | | 2005 | 6,324,590 | | 2004 | 6,269,931 | | 2003 | 6,194,942 | | 2002 | 6,094,456 | | 2001 | 6,015,154 | | 2000 | 5,917,218 | | 1999 | 5,819,160 | | 1998 | 5,694,827 | | 1997 | 5,503,092 | | 1996 | 5,263,326 | | 1995 | 4,846,741 | | 1994 | 4,180,541 | | 1993 | 3,509,964 | | 1992 | 3,040,520 | | 1991 | 2,912,738 | | 1990 | 3,210,032 | | 1989 | 3,858,087 | | 1988 | 4,669,809 | | 1987 | 5,413,430 | | 1986 | 5,770,004 | | 1985 | 5,756,487 | | 1984 | 5,488,692 | | 1983 | 5,054,130 | | 1982 | 4,709,637 | | 1981 | 4,523,281 | | 1980 | 4,547,547 | | 1979 | 4,800,368 | | 1978 | 5,192,581 | | 1977 | 5,509,078 | | 1976 | 5,710,867 | | 1975 | 5,801,222 | | 1974 | 5,748,772 | | 1973 | 5,593,240 | | 1972 | 5,331,377 | | 1971 | 4,967,100 | | 1970 | 4,456,964 | | 1969 | 3,963,271 | | 1968 | 3,688,529 | | 1967 | 3,474,595 | | 1966 | 3,316,942 | | 1965 | 3,357,616 | | 1964 | 3,570,896 | | 1963 | 3,775,105 | | 1962 | 4,041,935 | | 1961 | 4,370,329 | | 1960 | 4,579,439 |
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