Year	% of GDP
1990	14.556788347317593
1991	15.808933356831051
1992	14.929427808438355
1993	9.899861322870478
1994	9.06269479640358
1995	8.868303698734497
1998	10.120982663106671
1999	10.403938681366615
2012	12.752747363168346
2013	12.935408968210178
2014	12.86031482232583
2015	12.421318766700985
2016	11.900053127554138
2017	10.527237306284832
2018	11.36738251243397
2019	12.322920751411159
2020	12.06029394601966
2021	12.427893596669506