Year	% of total imports
1997	21.612875127618715
1998	22.138101275931593
1999	18.231971564859045
2000	17.999966642096553
2001	16.42765336671266
2002	16.83878388111189
2003	14.102203002451713
2004	13.593420002108331
2005	13.72210406340588
2006	11.166632794249615
2007	9.817797497374674
2008	8.600250995190644
2009	10.666881607060148
2010	9.509196434497726
2011	7.71047562833314
2012	7.9113309727600045
2013	8.144937976794514
2014	8.735027722291806
2015	12.195768404910892
2016	11.073373350574874
2017	9.392753832620272
2018	7.831189639655727
2019	7.095613205762606