Year	% of GDP
1960	1.04828301183277
1961	1.09795216131143
1962	1.23456787300942
1963	0.881715771230503
1964	0.694803888218119
1965	1.49053911978827
1966	2.32595158992758
1967	2.63912700484603
1968	-0.0557646715247547
1969	-0.0738885419397438
1970	0.83029197080292
1971	3.21953893624798
1972	3.74572566319893
1973	5.42033472082116
1974	7.32802488421396
1975	8.05225694631895
1976	8.40577215364937
1977	10.8344907407407
1978	13.0959856843306
1979	14.4024307251747
1980	17.3415294449715
1981	17.5875138990919
1982	19.4042860308322
1983	23.7662914691943
1984	24.2871292677943
1985	27.0862490877088
1986	27.2624004019812
1987	26.5011587122636
1988	26.930018464099
1989	28.2737568472818
1990	27.9611472112632
1991	27.632006203504
1992	26.9814110522649
1993	28.1045354674924
1994	29.5414809908065
1995	33.9629519790122
1996	33.6900644000113
1997	34.16150036455
1998	38.3206800844289
1999	38.6807966172011
2000	40.7701889378584
2001	42.6828503305343
2002	35.4233648134807
2003	39.5963179041121
2004	41.9088817340517
2005	42.224983882242
2006	44.5837743428979
2007	50.0203837757833
2008	64.6128581400359
2009	69.0679124328705
2010	67.3547075407057
2011	66.7310605729479
2012	68.2685484447236
2013	69.0075117034202
2014	70.6512495471067
2015	74.9558614683607
2016	85.9673219224208
2017	85.6718339095717
2018	102.172735718466