Year	% of GDP
1975	21.21543673396287
1976	21.060172501228934
1977	21.762860164319523
1978	22.173162845299466
1979	20.59368546622672
1980	18.10845598246658
1981	15.249845634083517
1982	15.259587392856853
1983	16.92584696967055
1984	18.606103546531322
1985	18.789984722790663
1986	20.0404266478848
1987	21.065186494471448
1988	21.20708969821893
1989	21.462571604921834
1990	22.65146491260505
1991	21.64724803335937
1992	22.147325597708125
1993	22.01487840763918
1994	21.670270488835012
1995	22.839704020190922
1996	22.934326658933102
1997	23.84100323076788
1998	23.470057941339817
1999	24.297128000135412
2000	24.949581852803835
2001	25.929894171042466
2002	25.258394560965787
2003	25.20028692589119
2004	25.808668705091925
2005	26.40806444136956
2006	27.646185031185013
2007	26.74065401326784
2008	26.888327440673716
2009	22.56653566681912
2010	24.627494027748938
2011	25.715205656373673
2012	25.741771002222418
2013	27.452070948463852
2014	29.003611726613016
2015	28.873959845413744
2016	29.54503371009338
2017	30.061553689247145
2018	29.879839490059656
2019	30.343874850501578
2020	30.602208468684516
2021	33.10928877558391
2022	37.24746064730869
2023	33.94689468242193