Year	% of GDP
1990	29.7727028394951
1991	17.6428368844144
1992	15.6666904906907
1993	21.5357111990915
1994	38.4166355267485
1995	41.9066490074066
1996	38.0052052329024
1997	30.8859788429396
1998	22.3811523940742
1999	29.6143671083983
2000	42.3035320788019
2001	34.1078678784664
2002	31.8766474392593
2003	33.0860584598117
2004	35.0071986851078
2005	42.363139848598
2006	41.5825273465954
2007	33.3987319145345
2008	33.9344113443423
2009	20.4763044803927
2010	23.2670968714346
2011	25.9882801574847
2012	19.0823797161999
2013	13.6274626362626
2014	11.0347273323825
2015	2.10342672948231
2016	0.786200059542649
2017	1.89218639089041
2018	4.60935600503207