Year % of GDP 1993 18.797133757961785 1994 25.65716573258607 1995 12.472912175461616 1996 28.33272341359877 1997 35.59699838520723 1998 33.680299947683544 1999 24.841347249079497 2000 20.11425149954431 2001 20.788212055083154 2002 29.441281649484534 2003 48.64416567550549 2004 54.06563972708729 2005 37.49726731882611 2006 21.524560177529313 2007 11.770596428130675