Year	% of GDP
1977	0.025496502142979414
1978	1.2395436717898138
1979	-1.089903953784497
1980	-2.2344371084898484
1981	-6.808397158794538
1982	-7.393982716135075
1983	-5.118733686994573
1984	-0.6743894923313799
1985	-1.1368823355967836
1986	0.2695117023197161
1987	0.8591667435515905
1988	1.6011830177759871
1989	0.20410293428037865
1990	-1.5901974975876032
1991	-5.28174753309381
1992	-8.93124566851092
1993	-1.7615861021139951
1994	-6.159451562688663
2009	-7.557264901568721
2010	-13.747160552957205
2011	-19.497472030521475
2012	-13.307622041217432
2013	-13.874382303097738
2014	-11.971152850699195
2015	-7.99809536960013
2016	-3.3941379852909126
2017	-1.54218396929207
2018	-4.039183263539449
2019	4.216114434787959
2020	5.096582849336686