Year	% of total imports
1996	4.455727798692934
1997	5.335371863572764
1998	5.270542311203835
1999	5.187539725966532
2000	5.9717046247739995
2001	5.172266621763419
2002	5.017987100364349
2003	4.614854422872749
2004	4.6318487086454105
2005	4.754696372190824
2006	5.493572882082337
2007	5.053456041187195
2008	4.122566130136579
2009	3.9952222370625154
2010	4.09632025646562
2011	3.626255104528887
2012	3.4612603398968704
2013	3.3401666185945866
2014	3.295854009884127
2015	3.852149859652822
2016	3.8427275920535537
2017	3.968522770842085
2018	3.8807720395177943
2019	4.263060223099279