Year % of GDP 1986 1.300959361575784 1987 0.25631273414176575 1988 2.3117856346305485 1989 2.1301560765787952 1990 2.1906172527169288 1991 2.307636626083048 1992 2.5288445910299107 1993 3.52754030399801 1994 3.876417522537597 1995 3.0749116128104057 1996 3.8306564985980582 1997 2.3347976330180353 1998 2.362121025526077 1999 2.6449359927151024 2000 3.094255070811116 2001 1.8134673307598024 2002 2.0083993239797833 2003 2.1714419060991363 2004 2.6050570960279558 2005 3.780897774394132 2006 2.8450110477695585 2007 2.9613836667632847