Year	% of GDP
1976	8.40716301020483
1977	12.256712326328142
1978	14.923958644406307
1979	16.14644819496694
1980	12.51971071630596
1981	11.413949428103031
1982	10.277554747076003
1983	14.004859592835897
1984	11.795216380701836
1985	13.060942567055495
1986	15.899106307874192
1987	16.261583464755834
1988	24.343854861281393
1989	21.278857196226824
1990	19.041961513629044
1991	18.40585181432459
1992	26.07481581051819
1993	34.1525499845272
1994	25.923056759976276
1995	23.75191756753249
1996	23.724574094688442
1997	21.851501579225214
1998	18.632179953420597
1999	18.647047758702183
2000	16.75970284869888
2001	17.36108318180851
2002	15.970102933727196
2003	17.87396704806156
2004	20.725958973469094
2005	15.025248651222324
2006	17.436268706757208
2007	15.552473032591399
2008	6.195810544630032
2009	12.952563295720937
2010	13.419187531557828
2011	8.583871553992992
2012	11.005683010565843
2013	11.94109447782984
2014	14.17906622147763
2015	18.231482292339745
2016	21.206674895516603
2017	21.560716133208217
2018	22.260497959383727
2019	22.70625832006507