Year	% of GDP
1970	12.130592384107555
1971	13.01340429790818
1972	13.339061164516586
1973	13.321486376580715
1974	13.184626977967435
1975	12.375806797304142
1976	12.566869805108267
1977	13.251840647588416
1978	13.879539436716248
1979	13.704154105554911
1980	14.290795510043028
1981	16.283454370417257
1982	16.977112922952415
1983	19.0753188645146
1984	21.30305966175158
1985	20.86474105340819
1986	18.19732542327629
1987	17.72484276770107
1988	17.302787083236556
1989	16.60237742203188
1990	15.724798157060684
1991	15.760719814785626
1992	16.187548921938514
1993	17.708887610621183
1994	20.311135433322054
1995	21.827099273103077
1996	23.03236079909567
1997	25.66978901068427
1998	26.101947326674974
1999	26.351509006702777
2000	28.56335793261105
2001	27.86161916024839
2002	26.553994919631997
2003	25.628906123405454
2004	25.41198482262225
2005	24.979269040941084
2006	25.241302500540435
2007	25.98473881467804
2008	25.623929174316228
2009	23.061694174725503
2010	25.95167934640243
2011	29.534962204927222
2012	31.4551199491031
2013	32.95195247859999
2014	33.46797623105767
2015	33.61086066866278
2016	33.862457601263436
2017	35.130564339367496
2018	35.14506266929931
2019	34.90690181475424
2020	30.779260238961225
2021	34.176422943818565
2022	40.87406424797809
2023	38.955967245119155