Year	% of GDP
1977	14.705035655419325
1978	16.512128789819315
1979	16.764848990946447
1980	14.71231605362567
1981	16.412874173787543
1982	14.889635022634927
1983	14.999796566126063
1984	14.19064485886247
1985	12.44871901910344
1986	10.414081940648547
1987	11.882335284838607
1988	12.076117475312383
1989	13.103882473553961
1990	13.171268565703892
1991	20.833556782380406
1992	20.73564368733995
1993	18.150435398541987
1994	15.92286437327212
1995	14.821829011554074
1996	14.419618059465044
1997	15.009416157934066
1998	14.33490968092505
1999	14.406194588552246
2000	14.842946843619483
2005	18.180199837655692
2006	18.891731259949974
2007	19.712303773623322
2008	18.758292472075446
2009	20.178829354772166
2010	18.29549340477597
2011	16.02861738623935
2012	15.458693750222032
2013	15.574579735923905
2014	17.119142721218978
2015	18.535380698890982
2016	18.059419307726625
2017	19.277291492769493
2018	19.03159363517459
2019	19.199325090841093
2020	15.804628755460433
2021	16.495490795640507
2022	17.621603486884272