Year	% of GDP
1987	31.52664197440317
1988	33.484270734032414
1989	36.302039220796146
1990	34.63787063989343
1991	26.538888338291418
1992	29.629195751616688
1993	31.780370993695488
1994	33.17030839611823
1995	34.66291353699445
1996	37.12426100699803
1997	36.54800732983221
1998	36.4
1999	36.504655510978736
2000	37.19437277306795
2001	38.21493107018862
2002	37.89831145472605
2003	37.42787484762292
2004	37.18212217600522
2005	37.042968210306846
2006	37.95852288058168
2007	39.759134444838594
2008	41.35407418051928
2009	41.365775808293975
2010	39.85955674116161
2011	39.260037092941005
2012	39.38756708384632
2013	40.50529993655335
2014	39.39471495281108
2015	39.15704316903547
2016	39.01995189356184
2017	36.822124102576474
2018	34.59284067091028
2019	35.12648961397025
2020	36.836380723981996
2021	36.84992189303482
2022	38.809492016557186
2023	41.049588305933355