Year | Value | 2022 | 24,961,453 | 2021 | 25,309,683 | 2020 | 25,666,827 | 2019 | 25,998,342 | 2018 | 26,248,761 | 2017 | 26,439,827 | 2016 | 26,619,117 | 2015 | 26,762,691 | 2014 | 26,861,967 | 2013 | 26,955,812 | 2012 | 27,038,058 | 2011 | 27,106,112 | 2010 | 27,190,759 | 2009 | 27,318,019 | 2008 | 27,440,964 | 2007 | 27,587,399 | 2006 | 27,762,911 | 2005 | 27,953,700 | 2004 | 28,145,810 | 2003 | 28,338,008 | 2002 | 28,500,533 | 2001 | 28,610,447 | 2000 | 28,694,322 | 1999 | 28,776,758 | 1998 | 28,849,755 | 1997 | 28,897,593 | 1996 | 28,934,103 | 1995 | 28,954,891 | 1994 | 28,947,385 | 1993 | 28,918,672 | 1992 | 28,873,596 | 1991 | 28,795,277 | 1990 | 28,675,237 | 1989 | 28,546,185 | 1988 | 28,417,995 | 1987 | 28,281,293 | 1986 | 28,135,174 | 1985 | 27,958,680 | 1984 | 27,737,674 | 1983 | 27,478,224 | 1982 | 27,190,937 | 1981 | 26,887,636 | 1980 | 26,562,319 | 1979 | 26,204,791 | 1978 | 25,827,851 | 1977 | 25,445,573 | 1976 | 25,073,324 | 1975 | 24,709,824 | 1974 | 24,360,299 | 1973 | 24,031,633 | 1972 | 23,727,480 | 1971 | 23,452,378 | 1970 | 23,184,042 | 1969 | 22,911,939 | 1968 | 22,631,212 | 1967 | 22,319,153 | 1966 | 21,956,556 | 1965 | 21,541,656 | 1964 | 21,080,628 | 1963 | 20,586,652 | 1962 | 20,078,254 | 1961 | 19,567,372 | 1960 | 19,057,215 |
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