Year	% of GDP
1960	13.476242490442381
1961	13.972655251725019
1962	13.398272376401396
1963	12.63938478439989
1964	12.927960927960926
1965	13.877731185168837
1966	12.24389645442277
1967	11.780022092472779
1968	7.349350137849547
1969	7.667186224300453
1970	11.075712143928037
1971	8.32419942530438
1972	6.588640849573267
1973	8.571428571428571
1974	7.958306130259574
1975	8.56669053631327
1976	10.877606419473198
1977	14.212109769911935
1978	14.567340170730208
1979	15.70823820395738
1980	15.160334236731362
1981	19.5620455780278
1982	19.535536159600998
1983	19.548872180451127
1984	18.9873417721519
1985	20.10723860589812
1986	21.08843537414966
1987	15.922330097087379
1988	15.259740259740258
1989	17.142856493506496
1990	16.701460855949897
1991	15.822222222222221
1992	16.96621135873472
1993	15.592783505154639
1994	15.142857142857144
1995	15
1996	12.685265911072364
1997	11.50808574652125
1998	12.004175365344468
1999	13.36150845253576
2000	12.937371361364306
2001	13.409534429885698
2002	13.644761150699395
2003	14.29940119760479
2004	15.577992994024314
2005	15.710306406685238
2006	17.111866601910315
2007	16.27282491944146
2008	16.795086543830262
2009	12.550374208405296
2010	14.26321896237361
2011	12.982277003865509
2012	8.108915029557533
2013	7.874650612771447
2014	5.211267605633803
2015	5.810385040304431
2016	5.484609138554662
2017	4.34092836237315
2018	8.767305301958768
2019	12.217655468191566
2020	8.814159867373144
2021	6.43694376491423
2022	10.209754542556583
2023	10.639659688441618