Year	% of GDP
1970	0.230817793611848
1971	0.237749022075074
1972	0.221188401342388
1973	0.189217228794841
1974	0.237879844407062
1975	0.331053498495601
1976	0.475123823482261
1977	0.406153479962113
1978	0.260954315248578
1979	0.291013788439217
1980	0.295481648391976
1981	0.289870230986033
1982	0.349892120459688
1983	0.2536376808284
1984	0.254870949155411
1985	0.251388280526356
1986	0.240581287515709
1987	0.191654893720457
1988	0.254832495732473
1989	0.321681391138201
1990	0.304710791954335
1991	0.253142749713204
1992	0.324165784779433
1993	0.279107901049608
1994	0.210288447004752
1995	0.219173334899465
1996	0.23367730443663
1997	0.223190170888022
1998	0.362647792725635
1999	0.266885431222738
2000	0.261484986654409
2001	0.281168418270262
2002	0.273599724435957
2003	0.240792185441215
2004	0.304343548351911
2005	0.839983093989034
2006	1.01880931000453
2007	1.70049664592402
2008	2.27976069077449
2009	0.936378160326233
2010	1.51316086876236
2011	1.42378541419491
2012	0.765651522424161
2013	0.89395152707577
2014	0.536394962114999
2015	0.285905510479196
2016	0.356697463670271
2017	0.457790108813118
2018	0.432284884211342
2019	0.649451614747357
2020	0.686623320605056
2021	1.31522382631184