Year	% of GDP
1980	20.3606010203698
1981	18.628393463131076
1982	12.141780584879747
1983	10.609808711391995
1984	7.251370137797272
1985	7.926452558477639
1986	8.02244437500007
1987	8.821338618262333
1988	8.348055747518682
1989	9.607363428875214
1990	5.561446434924097
1991	4.340182211261498
1992	3.974000276690602
1993	4.972060289008715
1994	5.3529933207499125
1995	6.508236390941331
1996	7.1985309372803465
1997	6.472184263933949
1998	7.353191848188183
1999	6.0762258009580385
2000	9.770264987805497
2001	9.617720661992948
2002	9.757199934302015
2003	9.71832265279153
2004	10.128831068695554
2005	12.954388548508527
2006	13.941458606069995
2007	14.14925793994201
2008	20.656719577353574
2009	22.931622404060086
2010	27.700972259297636
2011	27.757962825582737
2012	21.667208559371865
2013	21.237997234891452
2014	22.20588305406497
2015	21.90020433988866
2016	19.172495406028535
2017	17.77046763893601
2018	18.81391687319679
2019	20.049499568132315
2020	18.713246259685455
2021	18.95485770286244
2022	22.148089743239158
2023	21.59184473632621