Year	% of GDP
1960	18.3586877844856
1961	19.504575191689
1962	21.0961617250329
1963	21.9605190478274
1964	23.6676038218552
1965	32.0006300593106
1966	32.4005862010705
1967	33.9453161670748
1968	35.1193453380961
1969	37.0177858141953
1970	38.7005099006147
1971	37.9717592366193
1972	38.8229056366796
1973	36.945185773837
1974	24.5372085330671
1975	32.4432225812915
1976	34.4785980413052
1977	39.5896600506887
1979	51.3817010396054
1980	61.3836164057268
1981	67.6036500552997
1982	69.0386309719759
1983	63.4595751026002
1986	75.39411444946
1987	77.8763999127762
1988	78.4916323782169
1989	76.5935701376936
1991	70.0977681741677
1992	65.9018370203222
1993	61.7263081204024
1994	59.5883779795221
1995	57.2607406709223
1996	53.5946649503257
1997	55.5007943949708
1998	61.7409101911699
1999	61.7384933429662
2000	60.673669449739
2001	62.4752578787836
2002	61.3874144398244
2003	58.4270202216769
2004	49.1002269110816
2005	42.8029109115501
2006	41.080651936785
2007	39.3023361568131
2008	34.0976654164611
2009	42.1606832165574
2010	43.9331559572687
2011	46.8857685200658
2012	47.1865944841817
2013	47.4616441358895
2014	55.8988068927237
2015	71.4266325230477
2016	85.7182293758604
2018	67.7125867756122