Year	% of total imports
1995	3.472502624565937
1996	1.8178631019236886
1997	2.0693547375681947
1998	1.4977791550459663
1999	2.2862368541380884
2000	2.731019415065296
2001	3.6002724530505006
2002	2.924155128036221
2003	3.5349439607413284
2004	3.784368408264545
2005	8.954229381311912
2006	14.682579590616632
2007	14.196905225826525
2008	11.783095950915861
2009	8.166376632339666
2010	9.910340479499633
2011	8.496895920907326
2012	6.831865072381338
2013	4.2760232839035845
2014	4.312062294810705
2015	1.9217716573058354
2016	2.2763733229142002
2017	0.2954450260904376
2018	0.15781844189836836