Year	% of GDP
1990	21.888462475121976
1991	24.020899322104142
1992	22.331798091344687
1993	24.876592680348907
1994	27.630575920516115
1995	31.20558449789413
1996	31.2881307836615
1997	31.821359498926526
1998	15.544603044029332
1999	10.431767099785878
2000	13.409614451137902
2001	11.489339977707123
2002	8.073577879664834
2003	8.070797981703516
2004	10.672336978533819
2005	12.183900010670042
2006	11.883529049036168
2007	12.525475696636306
2008	11.184343664320624
2009	11.366592893104787
2010	12.33099676906483
2011	12.58690866734011
2012	14.651913200693537
2013	15.981618159577621
2014	16.6194733935684
2015	16.835974489522222
2016	16.926073642894952
2017	17.089412137943498
2018	16.979236266661076
2019	16.689984918562427
2020	15.668686931755744
2021	14.93368269052547
2022	14.175774965677315
2023	14.837964493423872