Year	% of GDP
1981	28.476760523221817
1982	27.103137778815796
1983	26.007997887080425
1984	24.90723003005547
1985	24.36047399607789
1986	31.568960801136907
1987	33.62498275764301
1988	35.133966453097734
1989	35.535140346635316
1990	35.36144532374494
1991	37.373732952351105
1992	34.061740322271575
1993	31.466484185613915
1994	30.196077000431437
1995	30.411845110698422
1996	28.134718796602805
1997	28.66558670613332
1998	27.842341946871603
1999	26.429740926798107
2000	25.172906511123493
2001	24.94769049844337
2002	24.880940299531137
2003	24.770567421603513
2004	23.660464947374187
2005	23.95918926050304
2006	23.29630065438774
2007	23.886406096072893
2008	24.563053099639635
2009	25.453444002644467
2010	24.32835857003511
2011	22.796399425054855
2012	23.280983285976696
2013	22.06409034442038
2014	22.08998407133228
2015	22.45105350627978
2016	22.04568947903839
2017	21.999693900679926
2018	21.268393561855035
2019	21.334575588918728
2020	22.824421683995098
2021	21.817362200876346
2022	21.429771437054754
2023	20.80329409994199