Year	% of GDP
1969	1.1630590468660729
1970	-0.16176400686645662
1971	1.4399715636133439
1972	4.035259404405141
1973	4.66876060445803
1974	4.72695874703932
1975	4.53126749702357
1976	4.336061718926977
1977	2.214761833659268
1978	1.295642070234792
1979	1.173684552279242
1980	1.0120652446797034
1981	4.91250232836655
1982	5.299287541250662
1983	4.364769390452359
1984	6.253558592625328
1985	5.326174063680546
1986	4.439225132100353
1987	3.2271070908076736
1988	3.486872398537578
1989	4.024540689908704
1990	4.796121414357922
1991	5.1086239740095785
1992	4.752461753339367
1993	6.2830416230637285
1994	6.5205668474478395
1995	6.623334456086688
1996	6.043960826985854
1997	6.379150566596034
1998	6.128660013441713
1999	5.408156697078857
2000	6.544588911233676
2001	6.558050639058191
2002	6.839447097300738
2003	6.6482712895614355
2004	7.739860869170921
2005	8.457512756792278
2006	8.590085296965508
2007	7.093043913626307
2008	8.52737493008322
2009	7.584477355875566
2010	8.08527082058928
2011	8.53436332856161
2012	9.73833247060337
2013	10.211624269641145
2014	11.10206087319078
2015	7.50121737718983
2016	10.211664786676398
2017	10.755324827337681
2018	10.543717142535986
2019	9.804748756234204
2020	10.069175046765345
2021	11.25424569859187
2022	10.792666832890129
2023	11.10942416781583