Year	% of GDP
1977	0.8334068713170006
1978	2.561508311252497
1979	3.4044160380373083
1980	2.9124819351533304
1981	2.1411235753292677
1982	1.5372919824176932
1983	1.7508926073596025
1984	1.5691097880340021
1985	1.772235073434186
1986	1.5249104008117507
1987	1.5434557915417326
1988	1.629660003854621
1989	1.843192792544629
1990	2.4482255324504636
1991	1.5844886540664804
1992	2.7859415986902563
1993	2.3746133809757985
1994	2.617185705306405
1995	3.172280346556962
1996	3.1858198350036315
1997	3.1306495513460195
1998	3.5637107523241403
1999	3.4368340981572403
2000	3.2285381432285183
2001	3.265112753385574
2002	3.4570746482683767
2003	3.9942141967666354
2004	3.7019637064278985
2005	2.2459505548374015
2006	2.11564844285465
2007	2.141167530175977
2008	2.1933596461778775
2009	2.072763097952557
2010	2.3813871860135545
2011	2.4205231053588085
2012	3.0093308837679484
2013	2.9022190372704695
2014	2.9201764844072002
2015	3.0493486182116514
2016	2.9576689629821846
2017	3.056783088730664
2018	3.889995833280271
2019	3.9750103549926847
2020	3.652544472325567
2021	3.7130232607808473
2022	3.3760388675299295
2023	2.8073620610621313