Year	% of GDP
1965	21.886120901576824
1966	22.002371755967815
1967	21.853950282258992
1968	20.189492858814038
1969	21.090789859138887
1970	21.15040669486804
1971	23.09301394643694
1972	22.848771187830906
1973	30.261930462200443
1974	44.57842037793298
1975	38.89979002131053
1976	37.51529645792225
1977	33.955560282008996
1978	29.85524303700383
1979	35.607750242653765
1980	32.45639004212803
1981	24.964334066504207
1982	24.77205130641266
1983	22.04112310289644
1984	20.403986029172756
1985	18.146485309695034
1986	11.258736152104259
1987	17.17269104894453
1988	17.786303590566366
1989	20.459488813972886
1990	17.90387461566391
1991	28.29641675696697
1992	26.81230985609601
1993	25.21517815898504
1994	27.00848771189047
1995	24.991185905753067
1996	24.01145214736509
1997	25.639841393564005
1998	22.331904276513733
1999	26.65532579340543
2000	31.417359531620086
2001	27.880670066587516
2002	30.802973823998336
2003	31.365223493861173
2004	34.360317454209614
2005	38.2146305970268
2006	38.949418815524375
2007	38.13640884274888
2008	39.08777857671504
2009	30.13475886226456
2010	31.420648444378752
2011	30.085013525955993
2012	29.618598137773837
2013	29.30158638861
2014	26.016988960961058
2015	21.569548981316295
2016	20.31959947340103
2017	24.25748315941642
2018	29.540825827309707
2019	26.560240635313477
2020	19.54528342896563
2021	24.881420900813033
2022	29.64555087878545
2023	31.66151700438908