Year	% of GDP
1991	26.940026936724664
1992	26.646077726868626
1993	27.753903837968977
1994	27.152912920789795
1995	33.737449589774435
1996	33.45936879784201
1997	33.44854917069556
1998	32.176181424289375
1999	33.35154566066537
2000	35.02595014200963
2001	34.10601976015805
2002	34.07565398662582
2003	34.54599546178781
2004	34.74264117244328
2005	36.41607251220369
2006	36.8765857903967
2007	36.850135817355394
2008	33.94634316015752
2009	28.229583432142668
2010	31.81610152780335
2011	33.58068082237432
2012	34.2902560853838
2013	32.48437676591783
2014	31.770027090328163
2015	28.21490929354616
2016	29.442137350183902
2017	28.48258027376306
2018	29.428936187912598
2019	29.422388116579242
2020	28.073120668781396