Year	% of total merchandise exports
1981	48.39706449989199
1982	57.66730399366278
1983	47.74221125901698
1984	18.792553209748135
1985	50.662266035523515
1986	44.49696426388493
1987	61.22919916796672
1988	57.990890310376585
1989	56.72786635955006
1990	69.13023452193605
1991	69.7516821477815
1992	67.58222356739306
1993	51.93554665166686
1994	65.90312634881585
1995	76.0740043364249
1996	71.80042979781147
1997	75.7751175876412
1998	69.71037642652455
1999	63.34815538092098
2000	75.9689342518444
2001	66.59353264247709
2002	69.01643323246468
2003	64.43822724469027
2004	62.42749143867169
2005	58.86635402223814
2006	56.14584577836481
2007	40.0673068426437
2008	37.36135280024985
2009	53.22689211511319
2010	41.851930018349506
2011	55.21376507479667
2012	57.418818403398184
2013	48.74073176829525
2014	58.555959882323116
2015	60.27771662930692
2016	53.45994994815146
2017	44.432443159095975
2018	54.249818749885705
2019	53.00611533634413
2020	45.32159028382246