Year	% of GDP
1980	153.543356207112
1981	166.363501922508
1982	159.796915915042
1983	132.630610743194
1984	77.1664507772021
1985	71.6448825875055
1986	68.0751034890597
1987	78.7150863723608
1988	75.8553093758444
1989	79.1936500525271
1990	85.4529964461321
1991	76.930086200016
1992	78.0265933773955
1993	67.1285871995924
1994	77.73587169976
2006	49.3340009071266
2007	96.5477045512309
2008	86.7102794727139
2009	73.0056489032109
2010	77.5617934486833
2011	88.0279050244333
2012	86.1330858652378
2013	88.2514064605124
2014	89.2313761962802
2015	76.5339444120003
2016	71.3075216179307
2017	67.6197031228131