Year	% of GDP
1996	2.21616005897522
1997	2.24830007553101
1998	2.11026000976562
1999	2.01567006111145
2000	2.12519001960754
2001	2.2786500453949
2002	2.20774006843567
2003	2.27722001075745
2004	2.44214010238647
2005	2.52290010452271
2006	2.71934008598328
2007	2.87258005142212
2008	2.9888699054718
2009	3.14668989181519
2010	3.3157799243927
2011	3.59198999404907
2012	3.8503999710083
2013	3.95124006271362
2014	4.07785987854004
2015	3.97819995880127
2016	3.9870400428772
2017	4.29205989837646
2018	4.51632976531982
2019	4.62702989578247
2020	4.79571008682251
2021	4.93011999130249