Year	% of GDP
1987	23.285383057633492
1988	23.10569784221069
1989	24.278522524502723
1990	27.01859852154744
1991	27.663424142423526
1992	28.409865219174236
1993	23.278997668385603
1994	24.47801436883739
1995	24.357123169590945
1996	22.32033892729373
1997	22.119820392709194
1998	22.70014081257546
1999	20.927900613399764
2000	19.126573338990298
2001	18.19480272966859
2002	17.73389924798924
2003	17.995762750485525
2004	17.94529666687738
2005	17.772839696006418
2006	17.630807406944456
2007	17.235272042926088
2008	16.39164339614351
2009	14.881556649816051
2010	14.625646124668043
2011	15.229699619793232
2012	14.794684855423942
2013	14.842497003192168
2014	15.204930574420846
2015	15.324874402227726
2016	15.635752239172863
2017	16.194354021478247
2018	16.773500550477237
2019	16.203203123256092
2020	16.815877490678822
2021	18.51340584078173
2022	18.279607382050877
2023	16.799050715201762