Year	% of GDP
1991	26.64539036291256
1995	33.70986789152576
1996	34.03625882327938
1997	33.50970037427629
1998	34.5862245680444
1999	34.691292621994364
2000	33.15439954269221
2001	33.44137033747857
2002	34.237098621109254
2003	35.06377291979787
2004	33.71499994130372
2005	34.0128422468802
2006	33.50923983479478
2007	32.8194221169809
2008	32.39161450400982
2009	30.448897903414636
2010	30.42177172807073
2011	30.356376151802767
2012	30.47543942271409
2013	30.797456198919136
2014	31.514919702344528
2015	29.995083659083914
2016	30.681791912272647
2017	29.065791976226897
2018	29.882033342459998
2019	29.519438337737114
2020	35.40053505176961