Year	% of GDP
1981	0.030463363796696973
1982	0.03010723123453396
1983	0.0076752959542084435
1984	0.007106972184781252
1985	0.0046483180428133946
1986	0.0052468399713808496
1987	0.005206484439711253
1988	0.00618436406067679
1989	0.0072500000000001626
1990	0.14687026459960367
1991	0.9179182358546213
1992	1.2379751874212168
1993	1.5788738158695934
1994	2.183604875386852
1995	3.337450398128925
1996	3.0945669450371893
1997	1.923521868541692
1998	1.2454164944052184
1999	1.8080266442212807
2000	3.290587352284011
2001	2.5273571999311706
2002	2.6867141914278116
2003	2.9040067195504737
2004	2.1608307385355165
2005	2.3365947168306422
2006	3.5695259634510883
2007	3.5129477654019783
2008	4.140305850507377
2009	3.6962363443401927
2010	3.4915192104126627
2011	2.48706141524765
2012	2.185668189551381
2013	2.406923717418017
2014	2.149111554840326
2015	2.3076622960335342
2016	1.8307671525311775