Year	% of GDP
1999	4.0962598323822
2000	3.798099994659425
2001	3.93569993972778
2002	3.87853002548218
2003	4.11728000640869
2004	3.943514943122865
2005	4.07819986343384
2006	4.15651512145996
2007	4.10503005981445
2008	4.311919927597045
2009	4.52371978759766
2010	4.33411979675293
2011	4.2383599281311
2012	4.37038993835449
2013	4.35383987426758
2014	4.30150985717773
2015	4.354599952697755
2016	4.241219997406005
2017	4.25576019287109
2018	4.15574502944946
2019	4.136135101318359
2020	4.44600009918213
2021	4.23099994659424
2022	3.72912001609802