Year	% of merchandise exports
1995	23.72467086271601
1996	19.634899537181383
1997	19.311668656642993
1998	17.207991111260952
1999	18.04595007127331
2000	24.65603503833652
2001	22.321847202150337
2002	19.023838413973788
2004	17.295064728864766
2005	10.471552474120074
2006	2.6195863489387485
2007	3.964619486693525
2008	10.386926444288687
2013	2.6426160619723587
2014	4.060683729488855
2015	16.262033593384412
2016	3.710222877733683