Year	% of GDP
1975	3.0904910865714394
1976	10.977537809861886
1977	3.4105165714564123
1978	4.616266453765686
1979	2.8063165905631657
1981	4.206169455517774
1982	2.591734948343427
1983	2.917293233082707
1984	3.079113924050633
1985	2.4986595174262733
1986	3.0839002267573696
1987	2.530097087378641
1988	2.821428571428571
1989	2.17012987012987
1990	2.3810020876826723
1991	2.1413333333333333
1992	1.2810927390366644
1993	1.2203608247422681
1994	4.510857142857143
1995	4.208823529411765
1996	3.966870095902354
1997	3.925535915757804
2002	4.8569543415149115
2003	4.599520958083833
2004	4.263754378734803
2005	3.744233983286908
2006	2.886352598348713
2007	2.8347878625134264
2008	3.8299274148520377
2009	4.171943964690079
2010	4.0165755014089175
2011	2.919261906498432
2012	2.1471905415895383
2013	2.130133304665663
2014	2.4845539906103284
2015	2.5266991284422438