Year	% of GDP
1972	20.168543460356
1973	20.585867490762087
1974	22.19400994572619
1975	24.48216320541703
1976	24.64185655415391
1977	24.717251440751163
1978	24.706594321319702
1979	24.252528169075347
1980	25.38454429885613
1981	26.17084343908645
1982	26.412103878785313
1983	25.992774726555574
1984	26.196756887585316
1985	25.765577247833686
1986	25.345365909604716
1987	25.75693880026384
1988	25.545752066249
1989	24.557326288784775
1990	24.68568704244954
1991	31.085635010720143
1992	31.306710691749995
1993	31.80645271833182
1994	31.893635046869452
1995	38.32551290239152
1996	32.45079057760568
1997	31.892716008464422
1998	31.702226943735667
1999	31.622351273136907
2000	31.313220393629482
2001	30.739364982923213
2002	31.177915673393624
2003	31.575622747640814
2004	30.390670579707585
2005	30.494557118572224
2006	29.19201871635333
2007	28.002080374467404
2008	28.272524141072612
2009	31.046068045123544
2010	31.3667134612385
2011	28.8749832934852
2012	28.49386772349935
2013	28.546001031532892
2014	28.052182289585065
2015	27.988189730947926
2016	27.902920178388
2017	28.078239204691535
2018	27.922120370232804
2019	28.38738554622623
2020	32.594447855734735
2021	33.25453012481168
2022	32.08018964045182