Year | Value | 2022 | 26,426,764 | 2021 | 26,209,041 | 2020 | 25,529,033 | 2019 | 24,522,519 | 2018 | 23,479,980 | 2017 | 22,380,948 | 2016 | 21,431,374 | 2015 | 21,087,965 | 2014 | 20,996,581 | 2013 | 20,656,132 | 2012 | 20,322,758 | 2011 | 20,099,670 | 2010 | 19,816,790 | 2009 | 19,380,214 | 2008 | 18,996,421 | 2007 | 18,627,563 | 2006 | 18,284,461 | 2005 | 18,071,941 | 2004 | 18,038,970 | 2003 | 18,007,640 | 2002 | 17,907,391 | 2001 | 17,713,405 | 2000 | 17,327,759 | 1999 | 16,770,394 | 1998 | 16,284,824 | 1997 | 15,865,705 | 1996 | 15,420,646 | 1995 | 15,094,089 | 1994 | 14,743,482 | 1993 | 14,044,701 | 1992 | 13,188,702 | 1991 | 12,446,266 | 1990 | 11,799,559 | 1989 | 11,514,972 | 1988 | 11,717,619 | 1987 | 12,168,521 | 1986 | 12,591,906 | 1985 | 12,871,744 | 1984 | 12,940,889 | 1983 | 12,848,237 | 1982 | 12,686,670 | 1981 | 12,465,545 | 1980 | 12,235,545 | 1979 | 11,986,364 | 1978 | 11,694,882 | 1977 | 11,434,654 | 1976 | 11,220,840 | 1975 | 11,000,021 | 1974 | 10,755,467 | 1973 | 10,515,998 | 1972 | 10,224,331 | 1971 | 9,901,279 | 1970 | 9,605,716 | 1969 | 9,363,112 | 1968 | 9,135,833 | 1967 | 8,914,245 | 1966 | 8,732,835 | 1965 | 8,590,054 | 1964 | 8,472,128 | 1963 | 8,397,262 | 1962 | 8,347,927 | 1961 | 8,253,535 | 1960 | 8,134,476 |
|