Year | Value | 2022 | 26,918,195 | 2021 | 26,896,099 | 2020 | 26,916,429 | 2019 | 26,959,500 | 2018 | 26,954,883 | 2017 | 26,898,856 | 2016 | 26,779,288 | 2015 | 26,509,732 | 2014 | 26,052,340 | 2013 | 25,460,813 | 2012 | 24,805,438 | 2011 | 24,142,290 | 2010 | 23,463,916 | 2009 | 22,802,061 | 2008 | 22,188,705 | 2007 | 21,652,869 | 2006 | 21,244,596 | 2005 | 20,913,451 | 2004 | 20,620,301 | 2003 | 20,370,656 | 2002 | 20,150,896 | 2001 | 19,948,606 | 2000 | 19,774,404 | 1999 | 19,642,639 | 1998 | 19,552,621 | 1997 | 19,479,120 | 1996 | 19,397,733 | 1995 | 19,290,633 | 1994 | 19,151,679 | 1993 | 18,977,091 | 1992 | 18,828,624 | 1991 | 18,751,091 | 1990 | 18,709,274 | 1989 | 18,405,541 | 1988 | 18,212,193 | 1987 | 17,962,896 | 1986 | 17,611,833 | 1985 | 17,222,400 | 1984 | 16,818,793 | 1983 | 16,384,546 | 1982 | 15,927,940 | 1981 | 15,477,154 | 1980 | 15,034,020 | 1979 | 14,563,366 | 1978 | 14,122,230 | 1977 | 13,734,606 | 1976 | 13,300,606 | 1975 | 12,828,275 | 1974 | 12,430,834 | 1973 | 12,109,635 | 1972 | 11,806,050 | 1971 | 11,507,314 | 1970 | 11,216,346 | 1969 | 10,940,159 | 1968 | 10,676,288 | 1967 | 10,414,605 | 1966 | 10,140,072 | 1965 | 9,847,938 | 1964 | 9,545,194 | 1963 | 9,238,347 | 1962 | 8,940,689 | 1961 | 8,683,684 | 1960 | 8,470,097 |
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