Year	% of GDP
1962	-1.51255719516351
1963	-2.0825303576858
1964	0.333371128729434
1965	0.0468960665924146
1966	1.42642136711818
1967	3.15657903099379
1968	6.05172076474024
1969	8.97606502559292
1970	12.3516461896836
1971	10.9729352619307
1972	12.2402313538234
1973	17.3388453138324
1974	13.1346061100111
1975	24.5846740010952
1976	26.7670483145624
1977	38.4013631485784
1978	39.4198631227121
1979	34.9478985730036
1980	35.9732096823002
1981	37.9206158484956
1982	42.33294638389
1983	41.8522624853788
1984	42.4813732220385
1985	38.3792478168662
1986	35.8835145068124
1987	35.0721887876486
1988	34.7277697396978
1989	39.5304043614058
1990	47.0266095719376
1991	36.115780986966
2005	52.2640130199713
2006	32.5778265083047
2007	35.1426872849142
2008	39.5659541710992
2009	43.7141765051225
2010	38.9263873528372
2011	34.618735270311
2012	30.1889030982377
2013	30.9653340799243
2014	38.380649548843
2015	42.3921607807048
2016	42.0968752512081
2017	42.861656590751