Year	% of GDP
1999	7.62947988510132
2000	9.65999984741211
2001	7.80542993545532
2002	8.44760036468506
2003	8.88984966278076
2004	9.26467037200928
2005	8.36588954925537
2006	8.27877998352051
2007	8.40625
2010	4.49022006988525
2012	6.35099983215332
2013	4.64799976348877
2014	4.38399982452393
2015	3.59894990921021
2016	3.92226004600525
2017	3.73344993591309
2018	3.75143003463745