| Year | Value | | 2022 | 9,269,665 | | 2021 | 9,090,664 | | 2020 | 8,906,671 | | 2019 | 8,701,179 | | 2018 | 8,480,571 | | 2017 | 8,265,845 | | 2016 | 8,030,293 | | 2015 | 7,811,705 | | 2014 | 7,628,987 | | 2013 | 7,439,404 | | 2012 | 7,270,375 | | 2011 | 7,207,934 | | 2010 | 7,298,973 | | 2009 | 7,314,265 | | 2008 | 7,323,458 | | 2007 | 7,293,024 | | 2006 | 6,783,748 | | 2005 | 6,666,514 | | 2004 | 6,522,557 | | 2003 | 6,366,693 | | 2002 | 6,212,269 | | 2001 | 6,021,434 | | 2000 | 5,821,840 | | 1999 | 5,627,830 | | 1998 | 5,437,496 | | 1997 | 5,247,963 | | 1996 | 5,097,332 | | 1995 | 4,944,895 | | 1994 | 4,797,618 | | 1993 | 4,587,437 | | 1992 | 4,476,622 | | 1991 | 4,712,420 | | 1990 | 4,923,304 | | 1989 | 4,973,168 | | 1988 | 5,086,147 | | 1987 | 5,108,882 | | 1986 | 4,951,171 | | 1985 | 4,769,616 | | 1984 | 4,598,178 | | 1983 | 4,450,803 | | 1982 | 4,328,153 | | 1981 | 4,331,258 | | 1980 | 4,315,288 | | 1979 | 3,975,099 | | 1978 | 3,523,460 | | 1977 | 3,292,678 | | 1976 | 3,217,918 | | 1975 | 3,150,160 | | 1974 | 3,093,130 | | 1973 | 3,039,800 | | 1972 | 2,984,312 | | 1971 | 2,930,575 | | 1970 | 2,877,134 | | 1969 | 2,823,545 | | 1968 | 2,770,724 | | 1967 | 2,718,333 | | 1966 | 2,666,600 | | 1965 | 2,615,251 | | 1964 | 2,564,286 | | 1963 | 2,515,239 | | 1962 | 2,467,473 | | 1961 | 2,420,303 | | 1960 | 2,373,751 |
|