Year	% of GDP
1975	1.52617985442592
1976	1.7522872403160898
1977	2.07792207792208
1978	4.95813133539004
1979	5.892751915144371
1980	5.69889130660035
1981	6.9025815655055
1982	8.53516194922673
1983	4.79033601777284
1984	4.17930569598921
1985	4.58815818221543
1986	5.83776248148471
1987	5.25325388113533
1988	5.60304575820703
1989	5.6446616644868195
1990	5.2847915443335305
1991	5.70375064815348
1992	5.8780719923865
1993	5.36985516733492
1994	5.11130218782841
1995	5.18323179048832
1996	5.273939763762369
1997	5.06848741255812
1998	5.3331039525181705
1999	5.50362154366541
2000	3.9616709688485305
2001	4.14808163198998
2002	4.61110660635053
2003	4.65883280302628
2004	4.0449288479601195
2005	3.2143810953300695
2006	3.10294772848129
2007	2.95699023434392
2008	2.80016136873791
2009	3.61053524967651
2010	3.2777559421609004
2011	3.59149722735675
2012	3.8444905725652996
2013	4.14139762975071
2014	4.41851202803887
2015	4.644111349036399
2016	4.67063531353135
2017	4.320737741790371
2018	4.04108625299001
2019	4.02986101554975
2020	4.04564950980392
2021	3.55388299692097
2022	3.17213705490747