Year	% of GDP
1991	19.735588517832937
1992	19.03662199833363
1993	18.222395573914746
1994	18.01127854840902
1995	17.998023626059947
1996	17.58314728175844
1997	17.637859294147866
1998	17.661994645003883
1999	17.29691231098468
2000	17.415743731115132
2001	17.132687736713066
2002	16.659994091292933
2003	16.209245459997266
2004	15.989208937355157
2005	15.705212890795964
2006	15.631734265777157
2007	15.665056748646421
2008	15.058038466399148
2009	13.633726999851008
2010	14.269229847156458
2011	14.528370320693028
2012	14.36800538876774
2013	14.288720329783407
2014	14.472610406102081
2015	15.088233210768474
2016	15.174044176270346
2017	15.126628047398333
2018	15.003264786317166
2019	14.797019941108703
2020	14.589342368709287
2021	14.814933304278192
2022	14.990254670776364
2023	14.970801489856388