Year	% of total merchandise exports
1981	22.107137080445284
1982	27.005196419106536
1983	22.678340420902675
1984	15.770215962124098
1985	8.19886485428679
1986	6.286844120009624
1987	13.260139120076678
1988	7.352276924045424
1989	8.87873969879559
1990	7.359763872839355
1991	7.027245486874661
1992	5.756032296907002
1993	11.563795773112073
1994	7.920056921857601
1995	7.423649100063641
1996	6.052953629530987
1997	7.040373715569393
1998	7.195753325978663
1999	6.761227112132624
2000	7.6686984775790545
2001	9.346265866598607
2002	12.55404053160534
2003	16.470928528159146
2004	31.39020872571548
2005	16.29033687027585
2006	13.404208548599202
2007	15.050215575010292
2008	9.679288962557763
2009	6.997041885818324
2010	7.2953999687768185
2011	8.699391813851957
2012	9.690393850432171
2013	11.860355101226713
2014	9.729359055080199
2015	7.418268532113529
2016	14.331617969392452
2017	16.42070596953887
2018	21.499998997477217
2019	21.487976907149015
2020	20.5510845971442