Year	% of GDP
1960	0
1961	0
1962	0
1963	0
1964	0
1965	0
1966	0
1967	0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	18.4965055825611
1986	22.4198282792243
1987	19.9357306286558
1988	21.2343686696338
1989	13.0034218739356
1990	13.7487981861884
1991	14.225234433991
1992	14.1168462856125
1993	4.26474643101294
1994	40.2247939399727
1995	11.9269314160534
1996	7.63678450090843
1997	6.77679540975548
1998	6.99448411009922
1999	4.61729288385925
2000	4.12588676836882
2001	7.27537847434838
2002	8.52700041903287
2003	12.3324068821781
2004	34.7444625259666
2005	52.6476125455147
2006	21.9052370746257
2007	21.1767945818564
2008	29.3534620171233
2009	26.0462318002647
2010	31.1380273920448
2011	31.8938302189619
2012	41.4994240814077
2013	44.9791257359393
2014	42.5010732282554
2015	46.0044754820449
2016	38.3727036672955
2017	45.2124318914749
2018	47.6123545165719