Year	% of GDP
1977	13.685492655615654
1978	14.181803632337205
1979	10.610246432222976
1980	9.408443015606498
1981	9.034141695329126
1982	7.962251393207644
1983	7.376641401728812
1984	7.024999376624821
1985	6.310521419810403
1986	5.176078094834256
1987	6.562547593709301
1988	7.891832482606762
1989	7.985911230457316
1991	13.913872028106427
1993	16.788255540092738
1994	14.809401047753749
1995	12.74207403561996
1996	11.853083854178337
1997	12.159170359642559
1998	11.744103413051217
1999	11.38773160733053
2000	11.487750162129416
2005	19.245960665831458
2006	18.071936617038773
2008	18.21093001329687
2013	13.712938155145778
2014	14.4514758582531
2015	14.7904212360721
2016	13.957370571370536
2018	16.401885635991402
2019	16.426515434434098
2020	10.861466324237796
2021	12.376223542513399
2022	14.131305054290754