Year | Value | 2022 | 23,992,716 | 2021 | 24,333,810 | 2020 | 24,683,173 | 2019 | 25,007,175 | 2018 | 25,242,521 | 2017 | 25,413,485 | 2016 | 25,578,515 | 2015 | 25,711,363 | 2014 | 25,803,874 | 2013 | 25,895,528 | 2012 | 25,977,508 | 2011 | 26,046,161 | 2010 | 26,130,681 | 2009 | 26,255,799 | 2008 | 26,376,638 | 2007 | 26,521,551 | 2006 | 26,696,636 | 2005 | 26,886,818 | 2004 | 27,077,733 | 2003 | 27,268,426 | 2002 | 27,431,160 | 2001 | 27,544,436 | 2000 | 27,633,003 | 1999 | 27,720,019 | 1998 | 27,798,339 | 1997 | 27,850,993 | 1996 | 27,890,992 | 1995 | 27,916,348 | 1994 | 27,915,214 | 1993 | 27,895,200 | 1992 | 27,862,386 | 1991 | 27,800,548 | 1990 | 27,699,164 | 1989 | 27,587,524 | 1988 | 27,477,673 | 1987 | 27,360,788 | 1986 | 27,233,626 | 1985 | 27,075,559 | 1984 | 26,871,967 | 1983 | 26,628,322 | 1982 | 26,356,880 | 1981 | 26,069,098 | 1980 | 25,759,278 | 1979 | 25,420,434 | 1978 | 25,066,327 | 1977 | 24,708,954 | 1976 | 24,360,415 | 1975 | 24,019,279 | 1974 | 23,686,770 | 1973 | 23,368,874 | 1972 | 23,074,661 | 1971 | 22,808,616 | 1970 | 22,550,127 | 1969 | 22,291,414 | 1968 | 22,026,183 | 1967 | 21,730,289 | 1966 | 21,385,127 | 1965 | 20,988,543 | 1964 | 20,545,763 | 1963 | 20,068,978 | 1962 | 19,575,026 | 1961 | 19,074,209 | 1960 | 18,570,909 |
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