Year	% of GDP
1988	54.5507373826685
1989	65.5482938588708
1990	79.3774983631573
1991	45.7358572448559
1992	48.9483582085637
1993	42.9685919135774
1994	48.8163958634207
1995	54.9446325522654
1996	60.5485359783992
1997	66.14
1998	73.8913151554553
1999	82.2674751172635
2000	87.9016141429669
2001	86.022851129402
2002	82.5745670545858
2003	78.6428703550784
2004	78.1256871956206
2005	69.6695264463214
2006	71.8110942239205
2007	74.1064201249241
2008	76.2752727111609
2009	72.0446936132977
2010	82.528480012555
2011	89.987856569182
2012	89.9553302724696
2013	93.3172929302942
2014	98.2255475847967
2015	100.566123866429
2016	103.999348177296
2017	106.567725062094