Year	% of GDP
1967	10.394519253484527
1968	11.164274322169058
1969	10.398981324278438
1970	10.183299389002038
1971	10.968921389396709
1972	12.861736334405144
1973	11.890606420927467
1974	12.682926829268293
1975	18.9873417721519
1976	35.82554517133956
1977	24.390243902439025
1978	22.433132010353756
1979	30.29062627916496
1980	35.61374590895567
1981	36.0530971128609
2007	23.529808596108538
2008	26.368662211486914
2009	28.37755119444462
2010	29.352015359915946
2011	28.031808002794623
2012	35.947414982415054
2013	30.992699927608758
2014	29.389483721315358
2015	28.339614707438866
2016	26.631079265348
2017	27.387227201085025
2018	25.978456621223906
2019	25.851490524796915
2020	24.315873848381624
2021	25.727102183373024
2022	28.04750104692785