Year	% of GDP
1970	0.3246819338422392
1971	0.27835051546391754
1972	0.2082324455205811
1973	0.3038461538461539
1974	0.18071803146430013
1975	0.2475954080049643
1976	0.019436345966958212
1977	0.04600965634762852
1978	0.05158353878247677
1979	0.08369029192613657
1980	0.026153787328413572
1981	0.13346411846601697
1982	0.08544442538266522
1983	0.07442937479325173
1984	0.18852939705688476
1985	0.14724964739069113
1986	0.16518433103037827
1987	0.1318957360559622
1988	0.38954532615719156
1989	0.6188904906171327
1990	0.4745926959788857
1991	0.5363004864652893
1992	0.5304680583298578
1993	0.3757986597587699
1994	0.46536388633825543
1995	0.5226802506490181
1996	0.39787416424770505
1997	0.4239555423084804
1998	0.3406513076885514
1999	0.3053870596296806
2000	0.3580092050921136
2001	1.6614364807613267
2002	0.4503659437987313
2003	0.5410120645980933
2004	0.6811532093821696
2005	1.9811788301013225
2006	3.623382497767514
2007	3.235919042255389
2008	2.5765490742101713
2009	1.3222148700692375
2010	1.1710918071575438
2011	1.9292183826801084
2012	1.560832222740356
2013	1.4160589330967623
2014	1.4204397055920837
2015	2.2287044088242864
2016	1.5908097414379068
2017	1.3026949828890544
2018	1.5982598614365864
2019	1.2492675044293289
2020	1.0654713054275984
2021	1.572819428836977
2022	1.5065287462322914