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Historical Values
Year Value
1990 3.0% (1987)
1991 2.3% (1988)
1992 2.3% (1988)
1993 3.7% (1990)
1994 3.7% (1990)
1995 3.7% (1990)
1996 3.7% (1990)
1997 3.7% (1990)
1998 3.7% (1990)
1999 3.7% (1990)
2000 NA
2001 NA
2002 NA%
2003 NA%
2004 NA (2003 est.)
2005 NA%
2006 NA%