Year	% of GDP
1977	12.510518934081347
1978	11.34070158577607
1979	12.826810595998369
1980	18.288025162884743
1981	18.843322818086225
1982	21.4661344484572
1983	20.33125577100646
1984	16.34902748517956
1985	19.17094062873015
1986	18.422649140546007
1987	18.79513702266533
1989	31.49967341606793
1990	29.414718888186986
1991	29.35689582020854
1992	27.861370215503378
1993	23.339586028460545
1994	25.860693464252837
1995	27.655001458151062
1996	30.493765586034915
1997	29.079205856900114
1998	32.11223991032046
1999	28.752438549845326
2000	30.18521705646155
2001	26.873595637323678
2002	24.208549333645603
2003	24.27371086426406
2004	23.190864124727092
2005	27.336776397389233
2006	33.51643758145024
2007	30.510418766021807
2008	29.455633669010073
2009	28.053608710113043
2010	27.98600600648193
2011	30.18335824119081
2012	31.341821743388838
2013	29.420535216144984
2014	31.871406311223698
2015	24.960803296806862
2016	26.0789605878196
2017	27.875162421241022
2018	26.219502528575276
2019	26.251133203239043
2020	24.13086702416099
2021	24.35767752377099
2022	21.825614323558966
2023	20.686961676604945