Year	% of GDP
1970	17.24844730195857
1971	16.10758183204458
1972	19.739299606444654
1973	21.13808816035475
1974	23.422503567569425
1975	25.78382862528012
1976	27.622203605092423
1977	27.717681776928433
1978	27.847053582531604
1979	28.094674927058954
1980	26.943426716853647
1981	25.461103534522994
1982	24.78586027240386
1983	24.016992518403807
1984	24.762170614805598
1985	24.41302605236669
1986	24.086995873778186
1987	22.742801532732766
1988	22.123923997345685
1989	22.358204945870565
1990	21.883826460816056
1991	21.34522952014438
1992	20.068774866344963
1993	19.569833791864312
1994	19.849026456738645
1995	17.423521656185645
1996	17.001631309172343
1997	17.096382726760165
1998	17.690014730657126
1999	17.584270147032598
2000	19.30754855410404
2001	15.828526563855402
2002	15.587483523936067
2003	15.546759498307411
2004	13.528291382054316
2005	12.98212221726947
2006	12.442969232545181
2007	12.433138957157052
2008	13.51190001077921
2009	11.259029573580175
2010	11.236550351380972
2011	11.2343372706222
2012	10.939894124535877
2013	9.436087882298356
2014	8.523206916549984
2015	7.448197257706736
2016	7.190350765885819
2017	6.887266102084459
2018	6.783808244479678
2019	6.664754090221699
2020	7.238002798171136
2021	6.72213983392933
2022	6.958105778370537
2023	6.757714175637715