| Year | Value | | 2022 | 7,989,653 | | 2021 | 8,093,879 | | 2020 | 8,203,095 | | 2019 | 8,315,907 | | 2018 | 8,444,999 | | 2017 | 8,566,715 | | 2016 | 8,649,082 | | 2015 | 8,704,491 | | 2014 | 8,734,425 | | 2013 | 8,734,283 | | 2012 | 8,716,442 | | 2011 | 8,703,837 | | 2010 | 8,707,222 | | 2009 | 8,732,102 | | 2008 | 8,780,329 | | 2007 | 8,849,403 | | 2006 | 8,926,042 | | 2005 | 8,996,042 | | 2004 | 9,058,235 | | 2003 | 9,106,051 | | 2002 | 9,130,448 | | 2001 | 9,123,865 | | 2000 | 9,081,873 | | 1999 | 8,999,155 | | 1998 | 8,880,388 | | 1997 | 8,732,554 | | 1996 | 8,564,768 | | 1995 | 8,386,349 | | 1994 | 8,205,389 | | 1993 | 8,035,027 | | 1992 | 7,880,088 | | 1991 | 7,737,003 | | 1990 | 7,607,419 | | 1989 | 7,489,838 | | 1988 | 7,377,384 | | 1987 | 7,277,038 | | 1986 | 7,200,142 | | 1985 | 7,141,503 | | 1984 | 7,097,716 | | 1983 | 7,061,673 | | 1982 | 7,014,304 | | 1981 | 6,941,773 | | 1980 | 6,840,319 | | 1979 | 6,710,256 | | 1978 | 6,556,675 | | 1977 | 6,388,203 | | 1976 | 6,212,229 | | 1975 | 6,033,436 | | 1974 | 5,854,395 | | 1973 | 5,676,078 | | 1972 | 5,500,993 | | 1971 | 5,332,043 | | 1970 | 5,168,586 | | 1969 | 5,011,977 | | 1968 | 4,846,879 | | 1967 | 4,660,085 | | 1966 | 4,459,500 | | 1965 | 4,262,659 | | 1964 | 4,080,190 | | 1963 | 3,925,720 | | 1962 | 3,811,456 | | 1961 | 3,727,657 | | 1960 | 3,650,744 |
|