Year	% of GDP
1996	3.1328330679614713
1997	3.532355080821165
1998	4.070709602708629
1999	4.892008352063412
2000	5.089772475385872
2001	7.426250570794063
2002	9.020048902307593
2003	9.340471715910203
2004	6.205067841231267
2005	5.6302867297793515
2006	5.942382838682002
2007	6.080372438646407
2008	5.59461247928629
2009	6.716060230567981
2010	6.204512513590867
2011	5.218900708869811
2012	4.813181748917891
2013	4.112254003970101
2014	3.5633295162968177
2015	3.4257786578761307
2016	3.259036180953376