Year	% of GDP
1980	15.930769957225785
1981	16.389488636363637
1982	18.300431111909464
1983	20.275694250070543
1984	19.199639300556733
1985	19.173807353388028
1986	17.27851132243278
1987	17.41059241059241
1988	16.59108087679516
1989	17.322786170272803
1990	17.49550505050505
1991	17.500440744368266
1992	18.007467870788467
1993	18.494905847373637
1994	16.354232913097153
1995	16.111083041611028
1996	15.871049812533474
1997	16.818001060445386
1998	17.433399299741207
1999	15.932985501166725
2000	17.296979536992975
2001	17.50132908027645
2002	16.956001197246334
2003	16.766027698798496
2004	15.74439070124225
2005	15.937658730158729
2006	18.57250690050134
2007	17.17856289406445
2008	15.625927108889215
2009	16.914897873037305
2010	14.977214223514057
2011	17.32202595371259
2012	18.728512657554386
2013	18.938473181609773
2014	19.999622778686806
2015	20.152798528438435
2016	18.94105165234495
2017	19.28052717374742
2018	20.391884143276396
2019	21.24243516815491
2020	23.633249683722457
2021	25.07458879434771
2022	21.436942341621588
2023	20.554562008363735