Year	% of GDP
1977	19.505520682218023
1978	17.44803092122588
1979	16.115671888399387
1980	13.966772437077182
1981	10.580309825838762
1982	9.660428231975276
1983	8.606631663795286
1984	7.544876372282193
1985	8.914568188575641
1986	9.866356800944837
1987	7.66302992858743
1988	8.478746414565483
1989	9.18549402722017
1990	10.197287556451336
1991	12.34829228446655
1992	11.48472103629242
1993	11.020779797988911
1994	10.804232741291322
1995	11.149828140930742
1996	9.780747140666673
1997	10.11337948966873
1998	12.004280060912157
1999	11.789601814572398
2000	12.47922174156989
2001	9.975221849603532
2002	13.720080445351297
2003	14.337354117768875
2004	15.667990279835161
2005	13.80210676348932
2006	14.358038997166345
2007	14.45507454574901
2008	11.604735700784683
2009	12.799141466310141
2010	11.647159011479378
2011	11.128842900003576
2012	11.558543262384399
2013	11.599704619808197
2014	11.771015460301534
2015	13.575192207546474
2016	14.82394456427483
2017	14.784342955502924
2018	14.666289634463334
2019	16.671689941194625
2020	18.53291728461406
2021	19.039592980980103
2022	17.910468220616586
2023	19.255591517460996