Year	% of GDP
1990	4.716198025648176
1991	4.186478501832464
1992	3.3488781155831635
1993	3.285839686657038
1994	2.9697479498199844
1995	2.9111407750597054
1996	2.8991205869488623
1997	2.810801654365261
1998	2.6562814678607127
1999	2.4574034806277427
2000	2.410426383867143
2001	2.361524528558955
2002	2.2872188622561422
2003	2.2210144241040966
2004	2.2209158274328846
2005	2.0414203123447283
2006	1.9515418262976578
2007	1.9770816460893303
2008	2.017934888641747
2009	1.9309994069590208
2010	2.101226309007927
2011	2.160792050587904
2012	2.134165508526489
2013	2.1613230062963904
2014	2.1532447682147704
2015	2.120058077884069
2016	2.055224352923285
2017	2.0813087983422944
2018	1.952817399362084
2019	1.9809702881847266
2020	2.066959534223048
2021	2.0270422255048834
2022	2.175157192166972
2023	2.092175375222753