Year	% of total imports
2002	4.633818074028912
2003	4.461304788334367
2004	3.9308868977681577
2005	3.1937069733310848
2006	2.94741484154955
2007	3.1947570864999144
2008	3.4713542249523215
2009	3.8057534659211676
2010	3.3277933507799764
2011	3.1677400519693073
2012	3.0773057403625166
2013	3.1560988554697404
2014	3.268583230369839
2015	3.4349358431340846
2016	3.536217883442531
2017	3.5246562804136747
2018	3.4360044096119298
2019	3.5198213911049034
2020	2.2385383561408885