Year	% of GDP
1970	5.195177876144947
1971	5.351933725372366
1972	5.802159313897945
1973	6.395435309700738
1974	8.248864418088289
1975	7.284094524079711
1976	8.067953018343003
1977	8.76360464323147
1978	9.02577352686406
1979	9.617128852718707
1980	10.28338921928935
1981	9.908136503399863
1982	9.06707929238358
1983	9.043328660845043
1984	10.033329098157747
1985	9.615833586657137
1986	9.888722475675442
1987	10.47766164835131
1988	10.57957718586566
1989	10.476320463416277
1990	10.560335286218143
1991	10.125543001778626
1992	10.24167959674415
1993	10.497438310292294
1994	11.162311746181954
1995	11.814157768795807
1996	11.94043642595764
1997	12.308570090860423
1998	12.310631451567431
1999	13.004232506698044
2000	14.410212827062304
2001	13.263734806763491
2002	13.154998559809272
2003	13.591644881267758
2004	14.819308784110527
2005	15.656500933301338
2006	16.333896296667323
2007	16.548226268095263
2008	17.441943601097964
2009	13.827308576483311
2010	15.878527508625009
2011	17.279014793331065
2012	17.037788306487585
2013	16.387814403007273
2014	16.3983551242045
2015	15.277065303949671
2016	14.564438559221198
2017	14.947857195521419
2018	15.158248370635203
2019	14.48304814813352
2020	13.021195472483873
2021	14.44550530598184
2022	15.406107681027443