Year	% of GDP
1988	160.3696162826407
1989	182.607770987474
1990	193.7315815624729
1991	126.31579271056437
1992	117.65409260519024
1993	113.37019662790536
1994	121.84982231891921
1995	120.43319058903805
1996	134.40858416925104
1997	142.55492783505156
1998	153.50021033309113
1999	170.93810776798992
2000	189.21906225980015
2001	198.8589468936746
2002	198.03775284012193
2003	213.49528654004953
2004	223.082333941363
2005	229.44790113424122
2006	241.43641489374446
2007	240.75984917292996
2008	235.60732681690916
2009	231.835194327813
2010	239.31778413378885
2011	243.03425477789608
2012	235.81951465581295
2013	236.6549635955403
2014	244.29691004266542
2015	247.2416298813643
2016	259.29319103848354
2017	260.6183105407121