Year	% of total merchandise exports
1981	0.015138117776836962
1982	0.012647135350835472
1983	0.01326074887997343
1984	0.013080646244458899
1985	0.00980770618908825
1986	0.005871074409055363
1987	0.0032793945720896076
1988	0.0023859581964829147
1989	0.0034306552415126154
1990	0.007482745536186235
1991	0.00806159503494008
1992	0.1030497060187151
1993	0.09939343965932176
1994	0.2493209150045136
1995	0.3483196958190472
1996	0.351946032155173
1997	0.3203817956159093
1998	0.28137698225261865
1999	0.2101684358394786
2000	0.24662625399712798
2001	0.26119248731191846
2002	0.2496634273228542
2003	0.266058059759793
2004	0.3203974113429318
2005	0.3300582003164003
2006	0.3692589321971056
2007	0.45250756237351575
2008	0.5142080552761116
2009	0.3934450111467725
2010	0.4695403017784549
2011	0.5641182504988701
2012	0.584007524316578
2013	0.5395137473449487
2014	0.44759252340294947
2015	0.33005725655411494
2016	0.3138825803859739
2017	0.3443532453096185
2018	0.328962656673469
2019	0.3445388852585703
2020	0.34254539527953687