Year	% of total exports
2002	9.079314476984909
2003	8.70410404878797
2004	7.171617661159534
2005	6.838692514369161
2006	6.616028409452551
2007	6.194299390979934
2008	6.148253077154151
2009	6.711997174549132
2010	5.8877728794939435
2011	5.484537238276904
2012	5.161629540332704
2013	4.8404016572712285
2014	4.43445747875682
2015	4.467596913859728
2016	4.534096414595769
2017	4.441942689227114
2018	4.320956467321754
2019	4.270823733656151
2020	2.250671951596523