Year	% of GDP
1988	69.8900477265634
1989	109.513807441487
1990	132.63142403589
1991	74.0447288093345
1992	71.9358929455507
1993	65.1152938408771
1994	75.4868082316901
1995	82.8623993943245
1996	98.9131231538464
1997	116.379270963021
1998	134.747006167606
1999	150.84167083374
2000	175.146062038547
2001	191.165664785906
2002	177.622357783413
2003	177.904918654117
2004	183.074364278531
2005	179.658245402566
2006	193.695564666156
2007	182.970625343105
2008	173.132798416051
2009	160.604355876433
2010	166.897663253602
2011	173.788449057727
2012	171.280600072534
2013	177.543095591107
2014	184.553871370916
2015	194.211016709367
2016	202.879074646395
2017	199.01269128583