Year	% of total merchandise exports
1976	6.288195374067305
1977	6.223928608488119
1978	7.22269708725097
1979	9.229687362653461
1980	9.81154942086371
1981	13.203629326540508
1982	11.069799486838354
1983	11.069799486929883
1984	11.069799487040285
1985	11.069799487403971
1986	13.67655165227671
1987	14.415335741448754
1988	15.760135664073188
1989	18.688861414858344
1990	17.078225391486463
1991	18.76910504586831
1992	19.14703219186388
1993	17.102824132489307
1994	18.675990751492968
1995	18.0456006069745
1996	17.308984904261322
1997	18.732874048030094
1998	21.123704236405413
1999	22.60603866909182
2000	22.95409820739504
2001	22.893195046649964
2002	24.42034151843724
2003	26.237134026126807
2004	29.734165197408878
2005	28.839413976478102
2006	32.15647498495688
2007	35.43646247334597
2008	38.88945620004893
2009	43.77236518104471
2010	49.346196007927354
2011	43.043342713211665
2012	42.32792396813848
2013	43.017214274307754
2014	41.99425612412299
2015	42.746419410672345
2016	41.48742359871234
2017	45.37044600666221
2018	39.703856016088594
2019	39.281703052086584
2020	38.66854197816402