Year	% of GDP
1975	4.743169428229769
1977	2.393632858901149
1978	3.1126427337497846
1979	3.2665268035807444
1980	5.309542216531482
1981	5.562373206381489
1982	4.663628763031796
1983	4.719392824931782
1984	5.8739559585812815
1985	12.862578518279669
1986	21.899501666877764
1987	14.93665248730288
1988	15.187891385928099
1989	18.243116637349214
1990	12.594198863043557
1991	13.24268101385933
1992	9.366989298212376
1993	13.643696717814288
1994	16.918476764659868
1995	17.836833693973308
1996	19.55121559688861
1997	27.753493075205345
1998	0.023167545750512292
1999	58.145418352318934
2000	67.00783401845244
2001	45.1589641297605
2002	37.365826828159356
2003	38.97268700425635
2004	43.70572046983591
2005	42.94831049218057
2006	52.65334588411805
2007	48.462946852174795
2008	21.675487540288866
2009	29.81224886787897
2010	25.04840322140814
2011	18.801198357713357
2012	23.087545088663372
2013	28.73408593881819
2014	27.16511691967144