Year	% of GDP
1970	7.84917180666127
1971	7.76128600036138
1972	7.49333979824727
1973	8.18385743482295
1974	9.27055349046428
1975	10.77638517617
1976	10.2263304239708
1977	15.2782684590894
1978	11.2944494529241
1979	8.8595676872024
1980	10.4874243786702
1981	9.02758744883039
1982	10.5386663282049
1983	10.2812536436439
1984	9.30024741918731
1985	9.60840408861008
1986	22.0276769922435
1987	14.2930288720551
1988	10.004891147993
1989	12.5137848161604
1990	19.7972836043128
1991	15.6144440320081
1992	18.3516089663806
1993	11.783513864103
1994	11.3606935001772
1995	15.8876053628025
1996	14.6082170583381
1997	16.2134698202213
1998	21.6619843703457
1999	13.3682577279386
2000	14.2566872840621
2001	8.05230833851418
2002	8.43552502197745
2003	12.876788824159
2004	11.1023236756794
2005	9.90200209747713
2006	9.42718135843611
2007	12.2555158372532
2008	11.6115795671527
2009	12.2691742280754
2010	10.5288662404631
2011	10.9869587677677
2012	9.77051963302454
2013	7.22686963531629
2014	8.02771244072182
2015	10.5713602396516
2016	14.6732645434772
2017	14.9365306672881
2018	8.55532841443589
2019	7.49079656656829
2020	8.22978194152241
2021	9.03701414128967