| Year | Value | | 2022 | 11,378,782 | | 2021 | 10,986,561 | | 2020 | 10,816,580 | | 2019 | 10,652,767 | | 2018 | 10,495,801 | | 2017 | 10,342,139 | | 2016 | 10,189,588 | | 2015 | 10,032,906 | | 2014 | 9,874,723 | | 2013 | 9,718,100 | | 2012 | 9,566,957 | | 2011 | 9,421,048 | | 2010 | 9,275,230 | | 2009 | 9,133,481 | | 2008 | 8,942,684 | | 2007 | 8,765,446 | | 2006 | 8,654,579 | | 2005 | 8,552,467 | | 2004 | 8,465,822 | | 2003 | 8,396,312 | | 2002 | 8,357,267 | | 2001 | 8,346,075 | | 2000 | 8,349,417 | | 1999 | 8,363,622 | | 1998 | 8,438,008 | | 1997 | 8,581,746 | | 1996 | 8,714,928 | | 1995 | 8,844,601 | | 1994 | 9,025,483 | | 1993 | 9,171,866 | | 1992 | 9,219,538 | | 1991 | 9,241,749 | | 1990 | 9,198,366 | | 1989 | 9,157,731 | | 1988 | 9,257,159 | | 1987 | 9,037,715 | | 1986 | 8,822,945 | | 1985 | 8,632,998 | | 1984 | 8,467,503 | | 1983 | 8,255,906 | | 1982 | 8,052,018 | | 1981 | 7,858,384 | | 1980 | 7,673,389 | | 1979 | 7,495,336 | | 1978 | 7,336,605 | | 1977 | 7,190,526 | | 1976 | 7,050,516 | | 1975 | 6,916,866 | | 1974 | 6,784,616 | | 1973 | 6,623,294 | | 1972 | 6,466,045 | | 1971 | 6,315,875 | | 1970 | 6,161,599 | | 1969 | 5,978,729 | | 1968 | 5,770,793 | | 1967 | 5,555,549 | | 1966 | 5,340,792 | | 1965 | 5,127,015 | | 1964 | 4,914,193 | | 1963 | 4,712,058 | | 1962 | 4,511,216 | | 1961 | 4,313,202 | | 1960 | 4,118,937 |
|