Year	% of GDP
1995	25.890956005527784
1996	21.078203069156206
1997	25.582720237592206
1998	30.033302498648816
2002	24.831878113696447
2003	22.901376343070627
2004	22.793921986671293
2011	23.01110697634366
2012	23.007590723665995
2013	24.160772947432434
2014	24.382665438739203
2015	24.4461757489854
2016	23.956729433832333
2017	23.8675876185324
2018	23.26681444791251
2019	23.150654647369638
2020	24.732563751741317
2021	24.53633311965525