Year	% of GDP
2000	3.154781209960697
2001	3.0908746054631306
2002	2.8711742544875616
2003	3.717241370844268
2004	3.556814929387236
2005	3.6739284598077266
2006	3.7880547981761725
2007	3.6227817162111364
2008	3.509375151963892
2009	3.4232203618245163
2010	3.44863203631963
2011	3.3343740610100445
2012	3.3879798332128495
2013	3.495533815336541
2014	3.412242950329322
2015	3.4859536007500775
2016	3.5470524645023125
2017	3.510142141477426
2018	3.265388345390102
2019	3.2622201082698483
2020	3.6079221737276344
2021	3.95573578819761