Year	% of GDP
1976	0.03629595924830689
1986	0.019589740587894155
1987	0.021512428627910384
1988	0.015323460806415634
1989	0.0071989971312653184
1990	0.3346616423230267
1991	0.32963406861031724
1992	0.4144965900553663
1993	1.071455866608647
1994	1.2164075237013678
1995	1.5803291703568472
1996	1.9382873968123782
1997	2.299974364050099
1998	2.854416916303995
1999	5.545965282180953
2000	7.539008598351976
2001	6.142408302813783
2002	5.31534116234239
2003	5.275039804722126
2004	5.2224592663939795
2005	6.107423774696243
2006	6.42101090681869
2007	6.702955418410782
2008	5.051785280247424
2009	4.563503145004896
2010	3.8136116739264176
2011	3.39373350415588
2012	2.822390844084829
2013	2.5461267320673238
2014	2.407031238706236
2015	2.4560917065404104
2016	2.674352952149325
2017	2.727229960499978
2018	2.827603144213646
2019	3.0137639600816497
2020	3.4879045539252447
2021	4.0651907430032015
2022	4.0725106180031325
2023	4.332076870346884