Year	% of GDP
1970	2.82981959687536
1971	1.02902896732231
1972	3.40930970981183
1973	4.29871748060017
1974	39.0001330213806
1975	29.6027283590989
1976	21.3356315061317
1977	27.2013155202753
1978	27.6115140387919
1979	53.9469270154673
1980	32.542915411399
1981	17.9630441836621
1982	7.49562339329986
1983	16.6994887937704
1984	20.103227987543
1985	23.5882761384965
1986	7.65871418724573
1987	16.0471420740884
1988	11.6032527493751
1989	24.5013102164613
1990	30.6150890561432
1991	20.0176989291755
1992	23.0465897725741
1993	28.5848268850145
1994	26.2916990777739
1995	27.4446896247965
1996	29.1677160895468
1997	29.7709119999325
1998	15.499721148259
1999	22.0308206615082
2000	43.6933433166058
2001	28.5621391754189
2002	27.1895735624659
2003	21.2503487601086
2004	25.0988473562294
2005	34.837420996188
2006	33.9084565801093
2007	34.283912273453
2008	37.187729257242
2009	24.5730772701098
2010	33.5096734280311
2011	37.4261753637161
2012	38.2761163072887
2013	30.2411289292074
2014	22.1627532667092
2015	9.98640233955356
2016	9.0185416132992
2017	14.3932577694784
2018	18.3274076798358
2019	16.6842425426461
2020	9.97982419987045
2021	15.5565091491463