Year	% of GDP
1970	0.2497244619250519
1971	0.21943185904350956
1973	0.22188442829875007
1974	0.5452061790542562
1975	0.5216868086426469
1976	0.5361632531760268
1977	0.3013650992043947
1978	0.14130334949763818
1979	0.08216667809169996
1980	0.3929662408965752
1981	0.2834702583619689
1982	0.48283656353578813
1983	0.5814135603390144
1984	0.9724491587210482
1985	1.976840514237103
1986	2.0371678294902797
1987	0.9310424261757169
1988	0.9498922569377994
1989	1.3112417772635951
1990	1.2244065142503502
1991	1.4631461130236885
1992	-0.09187139722406323
1993	0.5957415350699012
1994	1.7035308857842075
1995	1.8807045814522885
1996	3.995877025346368
1997	3.4903717175254907
1998	2.9123089682623107
1999	2.988871124073699
2000	6.30068181369306
2001	1.1079198164027781
2002	3.95066857001984
2003	2.912952501025438
2004	2.874375857307659
2005	10.237813120098087
2006	5.338940899773044
2007	5.693627720871366
2008	7.813448079802608
2009	2.5692538285668194
2010	6.946268485104118
2011	2.5921850444257664
2012	5.337079539561924
2013	2.2741285370162423
2014	4.597290141496143
2015	5.518731127515106
2016	1.7672444548159694
2017	0.8201663707283038
2018	3.274895707941579
2019	1.8807251097646651
2020	-3.0542905503169266
2021	5.564305502869309
2022	4.364526163943168