Year	% of GDP
1970	1.0546882736676053
1971	0.45982116332945483
1972	0.07066247808128694
1973	0.884850392106438
1974	0.843114807600968
1975	0.7163491259909631
1976	0.48370803815967706
1977	0.768102939053544
1978	1.0380833121755897
1979	1.569781050497307
1980	1.4897258903294073
1981	1.8049311054678072
1982	0.7535799983512168
1983	1.5349778943934123
1984	1.2851547851470673
1985	1.0280108028550656
1986	0.8878610904911969
1987	1.7553974117685853
1988	1.4421289563143616
1989	1.1310095886169733
1990	1.0150365909154377
1991	1.057347141151438
1992	0.9738198283973881
1993	0.8878306490019685
1994	1.8313260645145868
1995	2.612129631589184
1996	1.9488223232705648
1997	4.080796973431984
1998	5.733232457421609
1999	2.937679521312235
2000	6.26369186447201
2001	4.984136699353842
2002	3.8435128178349056
2003	2.6162252705576963
2004	4.365776022474701
2005	2.325412694798829
2006	3.816692472463554
2007	4.4349381982244545
2008	5.710829204570631
2009	2.745409300971072
2010	2.2469818215615036
2011	2.793396523255956
2012	3.404593801030878
2013	2.949458832847195
2014	3.598493803041151
2015	5.39115744659582
2016	4.424489549549587
2017	4.740763694925917
2018	3.6375838090268715
2019	4.35319353176514
2020	2.864626165483791
2021	5.163418664702378
2022	4.0401721160764055