Year | Value | 2022 | 23,253,364 | 2021 | 22,889,336 | 2020 | 22,513,745 | 2019 | 22,117,130 | 2018 | 21,729,048 | 2017 | 21,363,269 | 2016 | 21,005,862 | 2015 | 20,659,033 | 2014 | 20,321,900 | 2013 | 19,984,391 | 2012 | 19,654,418 | 2011 | 19,353,558 | 2010 | 19,091,337 | 2009 | 18,875,236 | 2008 | 18,662,012 | 2007 | 18,424,905 | 2006 | 18,141,728 | 2005 | 17,803,456 | 2004 | 17,409,623 | 2003 | 16,975,350 | 2002 | 16,520,098 | 2001 | 16,054,801 | 2000 | 15,583,169 | 1999 | 15,105,963 | 1998 | 14,631,977 | 1997 | 14,168,259 | 1996 | 13,717,991 | 1995 | 13,284,617 | 1994 | 12,860,675 | 1993 | 12,423,556 | 1992 | 11,970,188 | 1991 | 11,510,822 | 1990 | 11,044,671 | 1989 | 10,591,963 | 1988 | 10,187,355 | 1987 | 9,836,634 | 1986 | 9,530,481 | 1985 | 9,264,101 | 1984 | 9,026,742 | 1983 | 8,806,282 | 1982 | 8,595,841 | 1981 | 8,395,502 | 1980 | 8,200,271 | 1979 | 8,005,026 | 1978 | 7,823,193 | 1977 | 7,664,884 | 1976 | 7,523,308 | 1975 | 7,392,906 | 1974 | 7,270,331 | 1973 | 7,147,701 | 1972 | 7,018,160 | 1971 | 6,876,558 | 1970 | 6,721,984 | 1969 | 6,555,264 | 1968 | 6,375,182 | 1967 | 6,184,243 | 1966 | 5,988,634 | 1965 | 5,791,622 | 1964 | 5,594,090 | 1963 | 5,399,947 | 1962 | 5,218,369 | 1961 | 5,059,208 | 1960 | 4,928,063 |
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