Year	% of GDP
1975	1.7850961419770186
1976	1.6746829737577056
1977	1.7052162010954728
1978	2.11606705975315
1979	1.4011997509380123
1980	1.3798290343264707
1981	1.5950745132983166
1982	1.3340963379660247
1983	2.3205534555269534
1984	2.353926211550436
1985	6.206708444288732
1986	9.282164532295576
1987	16.062820381193767
1988	11.624799201881256
1989	13.978902572459447
1990	15.312998208078875
1991	11.75822903555167
1992	10.342057899808884
1993	14.487091297211716
1994	17.35418368105505
1995	15.062888369919387
1996	11.36771560263303
1997	31.047684356202616
1998	50.65083423565135
1999	62.52723477347218
2000	100.90172780244107
2001	77.87050779417225
2002	51.30627664004924
2003	48.0213485682098
2004	51.672612722888864
2005	52.73504756014235
2006	72.74742833634451
2007	101.99873237243943
2008	80.60603345135094
2009	48.265751761789716
2010	46.11425083265992
2011	42.05649274913168
2012	36.99019173819589
2013	37.26499688304318
2014	46.97299239068021
2015	47.50268070089069