Year	% of GDP
1960	7.11728605523355
1961	10.7454482995534
1962	10.9629508731843
1963	11.376887038001
1964	11.6086478563576
1965	11.1889502762431
1966	14.8155460874987
1967	16.9975414874001
1968	20.6885728298185
1969	21.3977536102692
1970	24.1161552117677
1971	26.0038595137013
1972	30.2419127988748
1973	33.5443037974684
1974	50.3040510980838
1975	60.9900591080064
1976	56.3165390777995
1977	59.3568336425479
1978	61.4876207570079
1979	58.8126830949509
1980	69.4736249718616
1981	81.7098571502959
1982	90.9416855130045
1983	97.2721594458009
1984	103.550471401634
1985	118.602039499161
1986	141.386568706875
1987	133.690078312882
1988	129.511962758471
1989	136.211264527287
1990	72.6738102636021
1991	75.1098628656853
1992	114.611729415122
1993	112.504573356641
1994	112.217998567482
1995	126.706911431551
1996	142.424425474223
1997	163.354529466456
1998	162.126607243225
1999	150.104777468198
2000	138.372172465846
2001	146.531301353739
2002	143.641652548151
2003	139.84795225196
2004	127.483333224184
2005	117.655651202652
2006	114.576565470095
2007	109.427899987979
2008	110.848650391993
2009	131.053617341205
2010	123.291265588347
2011	124.408425454643
2012	129.847387308768
2013	138.360292797879
2014	140.555701618163
2015	144.628441390643
2016	145.133348474523
2017	140.287084271111
2018	145.222074793111