Year | Value | 2022 | 24,584,369 | 2021 | 24,923,183 | 2020 | 25,269,494 | 2019 | 25,592,510 | 2018 | 25,833,541 | 2017 | 26,011,262 | 2016 | 26,176,886 | 2015 | 26,309,255 | 2014 | 26,399,849 | 2013 | 26,486,976 | 2012 | 26,566,886 | 2011 | 26,635,137 | 2010 | 26,718,372 | 2009 | 26,841,334 | 2008 | 26,956,187 | 2007 | 27,090,526 | 2006 | 27,252,033 | 2005 | 27,428,572 | 2004 | 27,607,329 | 2003 | 27,787,485 | 2002 | 27,940,150 | 2001 | 28,043,248 | 2000 | 28,122,731 | 1999 | 28,201,299 | 1998 | 28,268,691 | 1997 | 28,307,027 | 1996 | 28,329,862 | 1995 | 28,332,188 | 1994 | 28,303,639 | 1993 | 28,256,604 | 1992 | 28,200,301 | 1991 | 28,120,370 | 1990 | 28,008,451 | 1989 | 27,892,127 | 1988 | 27,775,975 | 1987 | 27,649,722 | 1986 | 27,515,797 | 1985 | 27,352,118 | 1984 | 27,139,851 | 1983 | 26,885,926 | 1982 | 26,598,005 | 1981 | 26,280,993 | 1980 | 25,930,357 | 1979 | 25,542,001 | 1978 | 25,129,504 | 1977 | 24,710,389 | 1976 | 24,302,280 | 1975 | 23,907,672 | 1974 | 23,533,673 | 1973 | 23,186,395 | 1972 | 22,869,167 | 1971 | 22,587,041 | 1970 | 22,315,554 | 1969 | 22,040,562 | 1968 | 21,757,978 | 1967 | 21,447,540 | 1966 | 21,092,113 | 1965 | 20,690,705 | 1964 | 20,249,579 | 1963 | 19,781,186 | 1962 | 19,300,036 | 1961 | 18,812,997 | 1960 | 18,323,178 |
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