Year	% of GDP
1970	0.002268269881927516
1971	0.005422580429805807
1972	0.00695624771335298
1973	0.010052807607365597
1974	0.055078436774991635
1975	0.06165787401794358
1976	0.09627747313190527
1977	0.14506463772319403
1978	0.15367518054527363
1979	0.39887139259342563
1980	0.4572094447163708
1981	0.4427968150654951
1982	0.32334735387055275
1983	0.48892764500780656
1984	0.5797721673707308
1985	0.5904513773630408
1986	0.1739317208741663
1987	0.26354342046592916
1988	0.5562938335577317
1989	0.8468118163047563
1990	0.9533613630760361
1991	0.4251636768342755
1992	0.39616298995827015
1993	0.3990995126838582
1994	0.3520936517496117
1995	0.35657001468866384
1996	0.48758457916777853
1997	0.4050461855553896
1998	0.12182628849976883
1999	0.3678051302549889
2000	0.882852489008508
2001	0.6603939145331795
2002	0.6624966695006009
2003	0.6679231761102182
2004	0.8032216448526879
2005	1.1082006536590687
2006	1.1833725195919123
2007	1.1406540088357895
2008	1.524486546222917
2009	0.9378258892181461
2010	1.046287608183275
2011	1.5289106134869956
2012	1.5021921310133677
2013	1.3352102038863987
2014	1.2332850139192486
2015	0.6212821490009546
2016	0.48648366909609186
2017	0.7049087960872696
2018	1.071517013085236
2019	0.965032750705407
2020	0.4984998806111795
2021	1.0817244819554448