Year	% of GDP
1970	0.4184480757572833
1971	0.316723877774766
1972	0.32269575619987606
1973	0.425624843361698
1974	0.6466889233606091
1975	0.43340088380622355
1976	0.26252292857893206
1977	0.46216285095253895
1978	0.4877487721541809
1979	0.42158094599676915
1980	0.4681060153626964
1981	0.40120587886119463
1982	0.271047895060443
1983	0.3082275165029775
1984	0.4518678183976141
1985	0.46923025275156344
1986	0.42203425290867824
1987	0.5501887894219988
1988	0.8332856575786945
1989	1.0050532577366549
1990	1.0387249494969002
1991	1.1938090850067964
1992	1.558332663818176
1993	1.5689294741094892
1994	1.1332367842881081
1995	1.4825044415368271
1996	1.3683894697661336
1997	1.5863558407043048
1998	1.9638252551654072
1999	3.078804070037004
2000	3.0307469717710487
2001	3.639660784203691
2002	3.433472871458252
2003	2.296002832849863
2004	1.679938591328124
2005	3.8752473513807373
2006	3.402534856436843
2007	3.1488338734758625
2008	2.320491388976632
2009	0.6821064916468519
2010	1.4701957269739714
2011	1.5428754083732394
2012	1.2275966210614946
2013	1.1234234241604186
2014	0.20325456271803513
2015	1.755723741416579
2016	1.3264916981271808
2017	1.3821203899638728
2018	2.7765781436235457
2019	1.9604940018061456
2020	0.7316118866249691
2021	3.2393820045162913
2022	3.7935033831882383