| Year | Value | | 2022 | 6,098,372 | | 2021 | 6,057,044 | | 2020 | 6,012,828 | | 2019 | 5,962,724 | | 2018 | 5,909,703 | | 2017 | 5,853,778 | | 2016 | 5,795,610 | | 2015 | 5,736,224 | | 2014 | 5,676,121 | | 2013 | 5,615,984 | | 2012 | 5,557,114 | | 2011 | 5,488,657 | | 2010 | 5,422,169 | | 2009 | 5,370,385 | | 2008 | 5,321,608 | | 2007 | 5,274,830 | | 2006 | 5,229,676 | | 2005 | 5,185,241 | | 2004 | 5,141,667 | | 2003 | 5,097,802 | | 2002 | 5,052,798 | | 2001 | 5,007,338 | | 2000 | 4,960,458 | | 1999 | 4,911,764 | | 1998 | 4,860,090 | | 1997 | 4,803,859 | | 1996 | 4,743,003 | | 1995 | 4,677,045 | | 1994 | 4,602,318 | | 1993 | 4,519,033 | | 1992 | 4,431,494 | | 1991 | 4,341,420 | | 1990 | 4,249,761 | | 1989 | 4,157,603 | | 1988 | 4,063,365 | | 1987 | 3,965,780 | | 1986 | 3,866,218 | | 1985 | 3,766,512 | | 1984 | 3,668,892 | | 1983 | 3,575,046 | | 1982 | 3,484,802 | | 1981 | 3,396,491 | | 1980 | 3,310,559 | | 1979 | 3,226,389 | | 1978 | 3,142,271 | | 1977 | 3,057,300 | | 1976 | 2,971,899 | | 1975 | 2,889,816 | | 1974 | 2,812,592 | | 1973 | 2,738,823 | | 1972 | 2,668,219 | | 1971 | 2,600,597 | | 1970 | 2,534,779 | | 1969 | 2,470,202 | | 1968 | 2,406,836 | | 1967 | 2,347,468 | | 1966 | 2,295,195 | | 1965 | 2,250,816 | | 1964 | 2,214,977 | | 1963 | 2,184,538 | | 1962 | 2,156,608 | | 1961 | 2,131,643 | | 1960 | 2,108,763 |
|