Year | Value | 2022 | 24,363,427 | 2021 | 24,504,556 | 2020 | 24,639,934 | 2019 | 24,767,361 | 2018 | 24,889,320 | 2017 | 24,984,608 | 2016 | 25,026,838 | 2015 | 25,051,382 | 2014 | 25,075,158 | 2013 | 25,081,170 | 2012 | 25,070,796 | 2011 | 25,048,277 | 2010 | 24,999,974 | 2009 | 24,966,427 | 2008 | 24,934,250 | 2007 | 24,888,908 | 2006 | 24,816,950 | 2005 | 24,718,530 | 2004 | 24,599,430 | 2003 | 24,470,119 | 2002 | 24,326,737 | 2001 | 24,149,917 | 2000 | 23,938,690 | 1999 | 23,678,014 | 1998 | 23,375,216 | 1997 | 23,053,288 | 1996 | 22,727,731 | 1995 | 22,403,983 | 1994 | 22,071,106 | 1993 | 21,747,641 | 1992 | 21,433,785 | 1991 | 21,110,566 | 1990 | 20,766,529 | 1989 | 20,409,619 | 1988 | 20,056,418 | 1987 | 19,718,822 | 1986 | 19,418,384 | 1985 | 19,155,744 | 1984 | 18,917,434 | 1983 | 18,682,464 | 1982 | 18,425,130 | 1981 | 18,122,114 | 1980 | 17,757,532 | 1979 | 17,337,936 | 1978 | 16,887,655 | 1977 | 16,426,634 | 1976 | 15,977,425 | 1975 | 15,543,565 | 1974 | 15,116,568 | 1973 | 14,696,931 | 1972 | 14,282,894 | 1971 | 13,879,268 | 1970 | 13,472,947 | 1969 | 13,064,496 | 1968 | 12,651,266 | 1967 | 12,214,035 | 1966 | 11,759,037 | 1965 | 11,307,247 | 1964 | 10,872,130 | 1963 | 10,474,620 | 1962 | 10,136,681 | 1961 | 9,850,895 | 1960 | 9,591,143 |
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