Year	% of GDP
1970	11.7339839421763
1971	14.8261594078895
1972	16.7252736694196
1973	18.568940368485
1974	47.360140628302
1975	37.2662498162087
1976	33.2729575358116
1977	29.6619105232745
1978	31.7653421755558
1979	36.2712245910874
1980	34.0602967673368
1981	26.9572602616531
1982	19.7882685941967
1983	15.9331788351053
1984	14.834775869565
1985	13.0111600545153
1986	5.3261828496059
1987	11.7165752598757
1988	11.0534011695511
1989	17.7018963845968
1990	23.2912360336472
1993	29.3853282211644
1994	24.2190216392295
1995	19.3040585759505
1996	19.6685614584308
1997	18.0436980240134
1998	11.6492107603037
1999	16.7896155043784
2000	30.6637746707723
2001	21.4882168458321
2002	20.4437414632993
2003	22.0449174416527
2004	25.1990020398231
2005	31.6076762648214
2006	31.5582038058527
2007	26.1252401169156
2008	30.5659738980313
2009	17.5512587993854
2010	20.2248363529261
2011	22.3514589221281
2012	18.4120723402826
2013	21.2565665523955
2014	21.2353758265799
2015	12.2663527393474
2016	10.8895031509112
2017	14.6204399688795
2018	27.6646471563106
2019	20.0780490508657
2020	13.2733495355914
2021	18.2658980929233