Year	% of GDP
1970	0.11366780862440522
1971	0.06610293170794522
1972	0.09928778603873005
1973	0.13540286913768718
1974	0.22909018193255043
1975	0.13709979915769682
1976	0.1553315554720478
1977	0.14026148198744756
1978	0.23388341294582962
1979	0.30639435503607654
1980	0.5858663419786533
1981	0.8007381258923724
1982	0.6349084825627455
1983	0.3164523871241853
1984	0.6248741521289931
1985	0.22194161345330318
1986	0.675731298001957
1987	1.3024140022635455
1988	1.0868074824909604
1989	1.3432407233434605
1990	1.1945041072293408
1991	0.5610470323047796
1992	0.4648539866175423
1993	0.7323695837565879
1994	0.767643589421284
1995	0.9042181883200613
1996	1.2096931026187887
1997	1.424065980596795
1998	2.3298495379527138
1999	3.2441430804059985
2000	3.40578123865959
2001	1.6300997672541555
2002	1.0161396520191766
2003	1.0221840098808967
2004	1.7486909434865412
2005	1.0916623163220864
2006	2.16033590475335
2007	2.3946907565640116
2008	2.3093783814635502
2009	1.11260018343609
2010	1.7545319211526158
2011	1.6891123514173192
2012	1.5402083306416832
2013	1.7068681403471646
2014	1.4303386309216797
2015	2.7954822020135643
2016	2.522681173797507
2017	1.9417755424686247
2018	1.039454087998189
2019	1.4682319617292467
2020	0.648892390593234
2021	2.0898717985070037
2022	1.5074439557198873