Year	% of GDP
1970	13.264065656988071
1971	13.41826475107909
1972	13.699392031314545
1973	15.28702159959206
1974	18.212215516943793
1975	17.576398103012295
1976	17.900740749885056
1977	17.965275666179142
1978	17.723354162137362
1979	19.07503763061594
1980	20.59779394613035
1981	20.428561538645038
1982	19.22479784839528
1983	18.21899943370962
1984	18.509003251300953
1985	18.015281151493294
1986	17.13713695484948
1987	17.48358596975457
1988	17.851408474775283
1989	18.525995862674417
1990	18.979170631225255
1991	18.71423305598187
1992	19.868351551274845
1993	18.92691867783803
1994	19.411262005884826
1995	20.701643273302174
1996	21.2572024939942
1997	22.20891684567041
1998	22.113585279570813
1999	21.797886328813597
2000	23.266742669995562
2001	22.690351136200455
2002	22.641944006390748
2003	23.266240717871035
2004	25.015865081944273
2005	26.27371023301828
2006	28.10031715518533
2007	29.420809711187434
2008	30.915809719790072
2009	26.721185132414
2010	29.479522112299982
2011	31.85712632338823
2012	31.875613004424157
2013	32.309428079034916
2014	32.42454313713034
2015	30.897861589621733
2016	29.94711421368593
2017	31.181926568738426
2018	32.08020166400937
2019	31.210380771192604
2020	28.720117367433456
2021	31.611017683923286
2022	34.006464700988005
2023	32.0366823399787