Year	% of GDP
1990	31.595963036401475
1991	24.59057575914115
1992	23.604777319410683
1993	21.879143037130174
1994	24.53018807180945
2001	40.64333485965058
2002	95.26786072041092
2003	105.60278085224483
2004	85.42559412374203
2005	76.11445970800249
2006	68.46070459201763
2007	57.559981877003786
2008	55.8665794658295
2009	47.69550144119122
2010	42.466638814169066
2011	43.207416877578595
2012	41.02823474887407
2013	40.08849437564634
2014	41.28500074061831
2015	47.276558512695296
2016	46.458466870982775
2017	45.074385213917374
2018	47.34159708920787
2019	50.131389311515065
2020	60.27843186545535