Year	% of GDP
1990	20.02445854086924
1991	19.096491402112818
1992	18.576688210002782
1993	18.398704810742505
1994	18.676335208565437
1995	18.99765159021585
1996	18.647068615520798
1997	18.455509017058798
1998	18.356726543414922
1999	17.83117807564059
2000	17.573244708129895
2001	17.14256510513314
2002	16.80621397866735
2003	16.13051529899192
2004	15.896197736172288
2005	15.548802308033293
2006	15.605368706683151
2007	15.955434093214697
2008	15.47025662951333
2009	13.713773395934039
2010	14.229326087083344
2011	14.214045524510057
2012	13.849625701515311
2013	13.880019814586413
2014	13.976239236242026
2015	14.395371385594027
2016	14.791033872890152
2017	14.913870424891776
2018	15.009778754687279
2019	14.884157919593063
2020	14.594389082178264
2021	15.528043652060836
2022	15.575023774154854
2023	15.731492206967415