Year	% of GDP
1980	3.52947998046875
1990	4.45406007766724
1991	5.42961978912354
1992	5.26045989990234
1993	4.95048999786377
1994	4.1706600189209
1995	2.37207007408142
1996	2.23007988929749
1998	2.73942995071411
2001	3.38423991203308
2002	3.38608002662659
2003	3.99845004081726
2004	2.31995010375977
2005	4.10879993438721
2006	3.90346002578735
2007	3.680340051651
2008	4.2190899848938
2009	4.27429008483887
2010	3.85796999931335
2011	3.5469799041748
2012	3.47637009620667
2013	4.05822992324829
2014	4.07005310058594
2015	3.91208434104919
2016	3.39370822906494
2017	4.07527017593384
2018	4.04528999328613
2019	4.19715023040771
2020	4.50287008285522
2021	4.29007482528687