Year	% of GDP
1990	30.623831775700932
1991	26.298378378378377
1992	22.95588830433023
1993	28.037051562179023
1994	33.89576677316294
1995	35.64548996289896
1996	30.330821862192458
1997	30.966583783325785
1998	35.17556331806187
1999	34.72543020679468
2000	29.972479141707865
2001	32.07565694640888
2002	36.43321329816312
2003	37.758042670087775
2004	39.600907041495184
2005	42.43026703878722
2006	43.37746627639167
2007	45.54069586751582
2008	45.808782186892095
2009	49.89775020636319
2010	49.33849678698439
2011	47.865355707612636
2012	51.03908155117719
2013	49.63326229373467
2014	50.611938287071936
2015	52.149832260678195
2016	50.1483211681284
2017	49.93244742407617
2018	49.767696970207886
2019	50.32618507949051
2020	50.68910091566428
2021	51.036010149014956
2022	51.015542967359316
2023	50.790626534910764