Year	% of total imports
1997	5.729347132604745
2000	5.241490358773897
2001	5.664539435236415
2002	5.629462570744366
2003	6.47364970757805
2004	5.730671583369313
2005	5.249570399610444
2006	5.366156806889835
2007	5.334423011184955
2008	4.999382626864682
2012	4.179887412438613
2013	4.343634396897667
2014	4.852795530078788
2015	5.4862679885931716
2016	5.565087207556631
2017	5.413598928774357
2018	5.504142009233883
2019	6.009045850880486