Year	% of GDP
1977	13.852888350867996
1978	15.752841948082622
1979	18.934767365776718
1980	16.194187164882756
1981	19.10920662973212
1982	18.734860390202343
1983	20.139396279570494
1984	19.168869774713126
1985	17.495439874033817
1986	15.696574216025878
1987	14.908496407559655
1988	14.855303974164398
1989	15.433070335989772
1991	19.49966829672764
1992	21.58831768526603
1993	19.462606564813168
1994	17.362897691426003
1995	16.870542910416884
1996	16.96833315596127
1997	17.19175250697735
1998	15.849052105263828
1999	15.515360434591281
2002	16.591412102703547
2003	17.64696255593738
2005	16.538514189822298
2006	17.294237525717364
2007	18.047793382806887
2008	17.00179215055336
2009	18.667709365990913
2010	16.820967835471638
2011	14.540349938136982
2012	13.980715387863333
2013	14.081273116234932
2014	15.768756139785756
2015	16.976444059165512
2016	16.373055934935877
2017	17.557870372088974
2018	17.252710454946886
2019	17.25030330246036
2020	13.539716670179645
2021	13.840030905262209
2022	14.967452187885279