Year	Percent of GDP (Units)
1990	189.757
1991	182.425
1992	173.621
1993	171.939
1994	162.981
1995	152.642
1996	141.479
1997	147.623
1998	151.225
1999	147.698
2000	152.094
2001	144.490
2002	132.427
2003	133.370
2004	113.047
2005	50.710
2006	44.977
2007	42.672
2008	37.319
2009	31.212
2010	30.024