Year	% of GDP
1990	19.482883359802365
1991	17.49383119887775
1992	18.710926252361457
1993	15.040171116806098
1994	17.23651828610648
1995	15.689500158176156
1996	16.10561795456529
1997	16.050095673879593
1998	16.188187128885353
1999	16.95430848919681
2001	16.540704458815274
2002	15.440012868458922
2003	14.859519879140818
2004	15.317058633854305
2005	14.794768597768135
2006	13.711529295591527
2007	14.08251458115324
2008	13.259303782646375
2009	11.687515825698675
2010	12.834842405292004
2011	14.715943318395707
2012	14.892364297402139
2013	14.347109316663472
2014	15.761030331691138
2015	14.393963933013781
2016	13.353181426945183
2017	15.184856960840925
2018	16.58706547293476
2019	16.677622662803508
2020	16.418005509091905
2021	16.78041067780837