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Historical Values
Year Value
1996 9.9 million (1992 est.)
1997 9.9 million (1992 est.)
1998 9.9 million (1992 est.)
1999 9 million (1998 est.)
2000 11.75 million (1997)
2001 11.75 million (1997)
2002 15.2 million (2002)