Year	% of GDP
1985	4.09021997451782
1999	3.9397599697113
2000	3.60612988471985
2001	4.34167003631592
2004	3.74496006965637
2005	4.00578022003174
2006	3.87146997451782
2008	4.28008008003235
2010	4.49659013748169
2011	4.63906502723694
2012	5.22722005844116
2013	4.690069913864135
2014	4.7172999382019
2015	4.750985145568845
2016	4.88207006454468
2017	4.8204450607299805
2018	4.73974990844727
2019	4.51147508621216
2020	4.35243988037109
2021	4.67440986633301
2022	4.2441201210022