Year	% of GDP
1974	0.62921511467423
1975	0.293244144726217
1976	0.30536080617762
1977	0.354171828827185
1978	0.397637402875323
1979	0.38781060890225
1980	0.224611106401564
1981	0.234053744253535
1982	0.188218039161906
1983	0.188325374710166
1984	0.194443195682706
1985	0.198034011833351
1986	0.192321691381104
1987	0.201292314197885
1988	0.156348345803423
1989	0.340667608015902
1991	0.666042626156598
1992	1.58844893323169
1993	1.94735454747913
1994	3.87970754615254
1995	2.84971854098777
1996	1.01593947680102
1997	0.687779456139851
1998	7.86282576081343
1999	4.99954503773918
2000	1.99183552671791
2001	2.02950329253814
2002	2.05491749658984
2003	2.55816937305229
2004	3.35211576211892
2005	3.80967005163199
2006	4.74413233794055
2007	5.25937488093712
2008	6.12664985588778
2009	7.9469631760414
2010	9.36698515953383
2011	10.3742636363462
2012	10.0467756206278
2013	11.8207741493068
2014	11.4404481833926
2015	12.7449494275786
2016	13.0206645953549
2017	16.7523537949631
2018	16.9764079051885
2019	14.307871567732
2020	13.4186052541747
2021	12.8996950623022
2022	14.787430409394