Year	% of GDP
1974	46.1897529309299
1975	39.1671518301021
1976	47.107028331534
1977	47.110296086203
1978	48.4211094274807
1979	47.7067418230364
1980	42.8702687084658
1981	50.4279113724667
1982	51.2346733668342
1983	53.0124473472479
1984	51.6280180649644
1985	49.2668658202639
1986	47.7669022334757
1987	50.8974534971515
1988	54.9864481156428
1989	54.9022525676937
1990	51.0846541344145
1991	54.7333349847655
1992	57.2248705725563
1993	56.1965739278338
1994	55.2739836834685
1995	54.4910429717551
1996	55.2125334982478
1997	58.6228887935406
1998	58.7980419967482
1999	59.1743422138589
2000	58.1651449623578
2001	69.1429579837325
2002	78.8683272337204
2003	83.1460524909538
2004	89.3728000910553
2005	92.2170348702948
2006	93.4469717136358
2007	90.5084275274226
2008	98.050462144082
2009	109.120509167736
2012	121.992414310868
2013	122.897008470699
2014	123.735515418182
2015	130.833931225527
2016	140.160482809415
2017	140.831371548101