| Year | Value | | 2022 | 6,355,870 | | 2021 | 6,294,882 | | 2020 | 5,952,716 | | 2019 | 5,412,171 | | 2018 | 4,853,604 | | 2017 | 4,414,876 | | 2016 | 4,185,541 | | 2015 | 4,277,672 | | 2014 | 4,627,106 | | 2013 | 5,081,931 | | 2012 | 5,536,021 | | 2011 | 5,796,665 | | 2010 | 5,825,901 | | 2009 | 5,691,724 | | 2008 | 5,429,957 | | 2007 | 5,153,306 | | 2006 | 4,970,827 | | 2005 | 4,950,987 | | 2004 | 5,079,914 | | 2003 | 5,305,927 | | 2002 | 5,490,636 | | 2001 | 5,555,023 | | 2000 | 5,476,112 | | 1999 | 5,261,386 | | 1998 | 4,947,600 | | 1997 | 4,554,937 | | 1996 | 4,167,999 | | 1995 | 3,836,408 | | 1994 | 3,561,632 | | 1993 | 3,314,916 | | 1992 | 3,083,573 | | 1991 | 2,894,228 | | 1990 | 2,795,395 | | 1989 | 2,816,272 | | 1988 | 2,933,368 | | 1987 | 3,156,359 | | 1986 | 3,424,713 | | 1985 | 3,637,201 | | 1984 | 3,728,277 | | 1983 | 3,717,812 | | 1982 | 3,672,318 | | 1981 | 3,605,330 | | 1980 | 3,522,280 | | 1979 | 3,435,280 | | 1978 | 3,351,948 | | 1977 | 3,247,643 | | 1976 | 3,123,280 | | 1975 | 3,010,656 | | 1974 | 2,896,777 | | 1973 | 2,761,622 | | 1972 | 2,639,215 | | 1971 | 2,543,704 | | 1970 | 2,473,738 | | 1969 | 2,409,468 | | 1968 | 2,345,407 | | 1967 | 2,281,633 | | 1966 | 2,206,532 | | 1965 | 2,129,292 | | 1964 | 2,048,128 | | 1963 | 1,991,699 | | 1962 | 1,958,390 | | 1961 | 1,928,711 | | 1960 | 1,899,093 |
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