Year	% of GDP
1980	16.7300709966371
1981	3.99825369745111
1982	12.9150024395291
1983	15.9079235873117
1984	10.019004396097
1985	4.23547355207305
1986	7.508328239784
1987	20.2289410654192
1988	1.61308628522146
1989	-5.82151766337193
1990	-1.03951322047189
1991	11.0743105713982
1992	25.4010404357261
1993	27.7738722440014
1994	26.6748891557325
1995	28.3643813670527
1996	25.2872639665729
1997	30.3606778338756
1998	37.8680830263022
1999	43.5147666762722
2000	33.857957443605
2001	36.5946636345006
2002	40.4293196902317
2003	39.3688068122479
2004	40.8438141349031
2005	41.8334485834828
2006	40.2951834170766
2007	47.9978555776963
2008	57.3035676590281
2009	71.2159633818419
2010	67.1198783705853
2011	72.2156512117748
2012	72.1639400967868
2013	79.1934477234921
2014	76.1858301339169
2015	90.8947260655113