Year	% of GDP
1977	29.018232819074335
1978	26.48966842864008
1979	21.49500601026443
1980	25.791956863626154
1981	23.855590606379252
1982	27.70069061648609
1983	28.88388734995383
1984	21.63049336142276
1985	24.690827107804846
1986	24.335692618806874
1987	24.31466191284679
1989	23.912802090137163
1990	24.31522425773847
1991	19.911865670682317
1992	21.659697651978128
1993	20.44534282018111
1994	19.799324946302548
1995	18.04870224555264
1996	16.040177334441672
1997	30.60880935385859
1998	29.9422527007765
1999	32.80469346826534
2000	33.45483856189647
2001	29.81222265903487
2002	33.720369861594655
2003	32.371599386252
2004	31.491978721829998
2005	30.818812142900715
2006	28.22936388895719
2007	29.487094969646854
2008	27.56032680980429
2009	26.73583143991761
2010	25.800534085596325
2011	23.27155191674652
2012	23.345926029569508
2013	23.200715673637433
2014	23.232884701251127
2015	23.899279466068077
2016	24.005755591693557
2017	20.70574583016663
2018	21.725138318616338
2019	26.141270109555787
2020	16.038039003032676
2021	14.424438600040462
2022	20.66167290886392
2023	19.5850333019493