Year	% of GDP
1977	11.979853484917692
1978	11.677879089585675
1979	10.728687181201831
1980	10.620664169844014
1981	10.470815579613058
1982	9.310166441460183
1983	8.787742800829438
1984	8.544371323553527
1985	7.676409090302972
1986	7.544139123564288
1987	6.731347325678749
1988	7.163793716721758
1989	5.9508035302112585
1990	6.273121542527521
1991	6.3579116557317645
1992	5.936401426975483
1993	5.7337215100118355
1994	5.608782404716911
1995	5.636393022998974
1996	5.704455240272541
1997	4.599105831959657
1998	4.390295241227079
1999	4.54192222328613
2000	5.052331547492351
2001	4.521190463861265
2002	4.707311318201042
2003	4.701705992090479
2004	5.006776047220102
2005	4.946326189844861
2006	6.3955073154001285
2007	6.308762118793935
2008	6.76548114589198
2009	6.447071553886882
2010	6.500482664057778
2011	6.5774116857684275
2012	6.984837991303877
2013	6.634223197731521
2014	6.113174092190838
2015	5.221581793185784
2016	5.080899415879669
2017	5.903587006733304
2018	5.5603593517606065
2019	5.018778782907591
2020	5.432320482798083
2021	4.797379276183365
2022	4.534314990519715