| Year | Value | | 2022 | 6,835,044 | | 2021 | 6,629,708 | | 2020 | 6,414,356 | | 2019 | 6,186,633 | | 2018 | 5,940,706 | | 2017 | 5,686,047 | | 2016 | 5,449,084 | | 2015 | 5,251,751 | | 2014 | 5,084,383 | | 2013 | 4,937,865 | | 2012 | 4,828,344 | | 2011 | 4,745,189 | | 2010 | 4,646,037 | | 2009 | 4,530,016 | | 2008 | 4,419,203 | | 2007 | 4,300,899 | | 2006 | 4,175,482 | | 2005 | 4,057,951 | | 2004 | 3,954,757 | | 2003 | 3,861,317 | | 2002 | 3,767,938 | | 2001 | 3,675,332 | | 2000 | 3,587,562 | | 1999 | 3,497,414 | | 1998 | 3,404,317 | | 1997 | 3,313,669 | | 1996 | 3,226,203 | | 1995 | 3,144,424 | | 1994 | 3,075,766 | | 1993 | 3,008,019 | | 1992 | 2,929,282 | | 1991 | 2,858,844 | | 1990 | 2,801,140 | | 1989 | 2,740,412 | | 1988 | 2,679,552 | | 1987 | 2,620,036 | | 1986 | 2,556,925 | | 1985 | 2,494,104 | | 1984 | 2,429,567 | | 1983 | 2,366,120 | | 1982 | 2,304,711 | | 1981 | 2,248,378 | | 1980 | 2,200,560 | | 1979 | 2,148,125 | | 1978 | 2,088,796 | | 1977 | 2,035,832 | | 1976 | 1,988,170 | | 1975 | 1,941,763 | | 1974 | 1,898,821 | | 1973 | 1,858,112 | | 1972 | 1,819,610 | | 1971 | 1,781,352 | | 1970 | 1,742,241 | | 1969 | 1,703,247 | | 1968 | 1,664,244 | | 1967 | 1,625,326 | | 1966 | 1,587,172 | | 1965 | 1,549,678 | | 1964 | 1,512,449 | | 1963 | 1,476,075 | | 1962 | 1,441,311 | | 1961 | 1,408,985 | | 1960 | 1,379,056 |
|