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Historical Values
Year Value
1996 6 million (1991 est.)
1997 6 million (1991 est.)
1998 6 million (1991 est.)
1999 3.5 million (1998 est.)
2000 7.1 million (1997)
2001 7.1 million (1997)
2002 7.1 million (1997)