Year	% of GDP
1976	21.140553117600522
1977	19.131752912161375
1978	17.259290790414617
1979	0.6558849146912156
1980	31.685731416714003
1981	24.08481203327823
1982	15.033469185534928
1983	16.48089006539678
1984	18.31391968669524
1985	16.355113245068754
1986	10.734328148262103
1987	11.372963660623101
1988	8.695459557067306
1989	11.388690165631841
1990	12.518856464188444
1991	7.897094214324459
1992	7.897836580508769
1993	8.000547637449719
1994	6.979681357388035
1995	6.124194655071249
1996	7.108279799054174
1997	6.827687904751767
1998	4.394733287436233
1999	5.625561405260252
2000	8.465273553659708
2001	6.998162645747562
2002	6.249874336070956
2003	5.96200069175005
2004	6.490479301974966
2005	7.8418756802003236
2006	8.570139213698667
2007	7.4317234622479065
2008	8.732267161821984
2009	5.989691804224154
2010	7.478885458619525
2011	9.626385246413259
2012	8.735107796860245
2013	8.147820647092743
2014	7.464937641379225
2015	5.620906231956592
2016	4.112573168808522
2017	4.47011430603654
2018	5.632683213567602
2019	5.171184536787273
2020	3.983225225251217
2021	6.06259469491568