Year	% of GDP
1977	0.42740811366062476
1978	0.47666749407222486
1979	0.42620839633716723
1980	0.47813906647085247
1981	0.22622819532015884
1982	0.20027278760447262
1983	0.268122321893254
1984	0.2822286213448704
1985	0.3611267964824458
1986	0.5124748684024385
1987	0.5244183396268924
1988	0.5777581718811836
1989	0.6198216821573487
1990	0.5869102521818979
1991	0.586254655226127
1992	0.7076787758103005
1993	1.1833733630073187
1994	0.9006236364789801
1995	0.5075694575012225
1996	0.4198198869185282
1997	0.4706014354196745
1998	0.40637319457172427
1999	1.563993849884623
2000	1.6233659541275878
2001	1.4684716126126942
2002	1.3402446381203512
2003	1.3321400902521126
2004	1.6837033711484806
2005	5.497404905841407
2006	5.0153958109325245
2007	4.661645715881277
2008	4.15866874495338
2009	4.434260243548575
2010	4.086982719707424
2011	4.179872696274747
2012	3.870693246915305
2013	3.456835370329688
2014	3.330879486412192
2015	4.12828886989275
2016	4.169220510116053
2017	4.691819721570602
2018	4.577467667149015
2019	4.304628773778947
2020	3.7604520107287582
2021	3.9233000466043553
2022	4.076385488915018
2023	4.462318883589445