Year	% of GDP
1970	5.232866497263867
1971	3.8134530345642252
1973	6.796307262149524
1974	6.079233051671843
1975	3.9080884065612995
1976	4.506673803735916
1979	5.08654237032897
1980	6.205307265236913
1981	5.635920047042208
1982	7.425324981939135
1983	5.606951224259671
1984	4.750502878705153
1986	5.371980378993477
1987	4.808618539712115
1988	5.2741715261244115
1989	5.398523259999729
1990	7.311152723659781
1991	5.755120353176375
1992	8.22175709906903
1993	9.1641301245817
1994	13.903936680231533
1995	13.119879684143527
1996	11.088508055947948
1997	9.860266735162924
1998	8.73350733712843
1999	7.466974628582328
2000	9.637713890456734
2001	8.765156110492885
2002	9.360888335270877
2003	11.008724146351657
2004	11.298910182702546
2005	13.836724334257093
2006	14.853112147838516
2007	16.019367552523654
2008	18.976911802805446
2009	11.915845032394232
2010	13.43611356123645
2011	15.19874568605454
2012	12.858027045759728
2013	11.33417685417302
2014	9.790619701221745
2015	7.04000835229914
2016	6.833820681952954
2017	7.5330649143641235
2018	6.99382131469971
2019	5.765698677460822
2020	4.970466134774334
2021	8.211752877523786