Year	% of GDP
1999	16.293971661522335
2000	28.703382158726072
2001	29.24667572350171
2002	15.532811830744606
2003	17.17158035727723
2004	18.074570117164768
2005	17.1091178120826
2006	23.385169992982977
2007	21.49916056356596
2008	25.65014985655587
2009	18.361079231124652
2010	16.599947206125023
2011	16.103412436712823
2012	14.822719111325608
2013	14.18476265713902
2014	13.542630162126212
2015	11.002019017930307
2016	9.732512483527875
2017	9.223777502108003
2018	9.644778503413566
2019	10.090385804430989