Year	% of GDP
1971	0.5045734175021503
1972	0.4884601919870275
1973	0.4880153931449099
1974	0.6832306971806242
1975	1.2925584291045276
1976	1.364348654826372
1977	1.4628128452518423
1978	1.2726288594953135
1979	1.1948668080650375
1980	1.2491921894941842
1981	1.3529131524492641
1982	1.6778724815290638
1983	1.3033239574954385
1984	1.337315505588381
1985	1.6819891798198878
1986	1.3000504764533232
1987	0.8819367107562053
1988	1.0188812564878318
1989	1.1705665552688818
1990	1.0477286482923471
1991	0.9527145147548949
1992	0.9047760626341228
1993	0.6886684946551684
1994	0.7019393206523868
1995	0.8129034417568073
1996	0.6511963482074489
1997	0.5392490120096496
1998	0.4069975909719096
1999	0.38649375872626507
2000	0.5078828617700246
2001	0.9038127786553649
2002	0.5508507063379178
2003	0.5263211494379291
2004	1.2813212859358294
2005	0.8960123058360255
2006	0.8278979841231175
2007	0.9955323228717949
2008	1.9546962720514105
2009	0.6982634828233094
2010	1.0758641114969614
2011	1.2304375749486454
2012	0.8173078974612935
2013	0.6117597155884411
2014	0.4430199645556753
2015	0.3461914618537812
2016	0.4228817387282693
2017	0.557350327104759
2018	0.6102315005525365
2019	0.4320596720759509
2020	0.357158073282905
2021	0.6009805376528097