Year | Value | 2022 | 36,832,620 | 2021 | 34,688,804 | 2020 | 32,513,061 | 2019 | 30,234,795 | 2018 | 28,257,111 | 2017 | 26,581,510 | 2016 | 25,361,609 | 2015 | 24,696,706 | 2014 | 24,395,995 | 2013 | 24,319,593 | 2012 | 24,372,871 | 2011 | 24,235,998 | 2010 | 23,912,909 | 2009 | 23,570,531 | 2008 | 23,161,607 | 2007 | 22,610,043 | 2006 | 21,981,335 | 2005 | 21,431,711 | 2004 | 20,963,958 | 2003 | 20,491,142 | 2002 | 20,010,526 | 2001 | 19,505,663 | 2000 | 18,905,818 | 1999 | 18,247,308 | 1998 | 17,491,780 | 1997 | 16,628,788 | 1996 | 15,840,421 | 1995 | 15,104,423 | 1994 | 14,336,165 | 1993 | 13,591,568 | 1992 | 12,946,412 | 1991 | 12,394,857 | 1990 | 11,952,020 | 1989 | 11,682,623 | 1988 | 11,570,530 | 1987 | 11,514,543 | 1986 | 11,424,476 | 1985 | 11,268,182 | 1984 | 10,993,750 | 1983 | 10,626,063 | 1982 | 10,271,225 | 1981 | 9,962,988 | 1980 | 9,670,975 | 1979 | 9,359,140 | 1978 | 9,062,486 | 1977 | 8,789,527 | 1976 | 8,498,198 | 1975 | 8,187,326 | 1974 | 7,846,230 | 1973 | 7,465,841 | 1972 | 7,110,657 | 1971 | 6,804,844 | 1970 | 6,553,300 | 1969 | 6,372,971 | 1968 | 6,228,545 | 1967 | 6,076,531 | 1966 | 5,910,752 | 1965 | 5,740,617 | 1964 | 5,600,471 | 1963 | 5,511,365 | 1962 | 5,441,127 | 1961 | 5,441,516 | 1960 | 5,555,287 |
|