Year	% of GDP
1960	30.768208328857
1961	30.0709491024513
1962	25.7857035654149
1963	24.1702226347302
1964	21.2939995560231
1965	20.3894466722861
1966	17.8397696438663
1967	20.7423954605809
1968	22.6184543545548
1969	32.8885104291628
1970	36.8010691248368
1971	38.4519634198135
1972	46.6591850948323
1973	48.2052325365486
1974	49.7533009219829
1975	56.6231984907463
1976	57.8366161900605
1977	59.023468337949
1978	45.5237552976194
1979	49.6448584218508
1980	43.042903274905
1981	45.9196226615521
1982	48.4457802653974
1983	57.2242585321502
1984	50.7718795281183
1985	50.9133302999906
1988	165.540572944175
1989	212.918699691498
1990	87.6272265457905
1991	87.939777967446
1992	129.752659751156
1993	180.043954089425
1994	84.5701008968234
1995	56.0940643824469
1996	56.409959756178
1997	58.6352788391006
1998	65.247877107222
1999	69.40366800425
2000	70.6812450382375
2001	72.8651485328614
2002	75.1816670515262
2003	74.26218467504
2004	72.90877494497
2005	76.2351917332063
2006	82.9100902026264
2007	87.3153314939352
2008	85.9087786270452
2009	90.4749515676011
2010	93.3887029495729
2011	95.1554468543532
2012	101.064049187409
2013	100.045957422747
2014	103.440518968876
2015	107.063168960991
2016	111.185414793342
2017	111.364247302995
2018	113.709350765773