Year	% of GDP
1977	8.689574139517958
1978	8.676446357115806
1979	8.60989048092582
1980	7.536615303096833
1981	7.205328542299726
1982	7.077072051636055
1983	6.385537022795395
1984	5.926008900455772
1985	5.360109556135377
1986	4.0584308497203585
1987	3.027803742046826
1988	3.0763948946458974
1989	3.106543642950216
1990	2.945483863657395
1991	3.424037988741393
2005	6.8474839197083
2006	6.0129541166263625
2007	6.762035102891008
2008	8.077208681447226
2009	9.69229223143841
2010	8.62668153968774
2011	7.417207387707017
2012	6.43747987362788
2013	6.341867557434025
2014	6.428599594207311
2015	7.725678205232079
2016	7.916060382989983
2017	7.575244608471285
2018	7.745091465817756
2019	6.81147224540993
2020	6.3240802807000245
2021	5.435246028914307
2022	5.092746158065104
2023	5.208111953694268