Year	% of GDP
1990	47.17589236447891
1991	49.64715477939142
1992	43.30079487565434
1993	71.5033855542775
1994	90.25231000959266
1995	80.61820764249322
1996	70.39364893859849
1997	67.73174267571184
1998	76.06384427063885
1999	83.4720247831402
2013	10.733283781495022
2014	26.937279736519148
2015	27.94312503793025
2016	29.005690069003386
2017	30.095113199618506
2018	32.533218502358736
2019	31.448848674036356