Year	% of total merchandise exports
1960	8.47292817679558
1961	6.473713646532439
1962	7.758346581875994
1963	7.470260377672407
1964	13.227028499269567
1965	10.95363756312844
1966	9.682498032012594
1967	9.504661689167131
1968	10.145117063323683
1969	6.27694902215048
1970	6.694673047360696
1971	7.028250603064587
1972	5.915171380377372
1973	4.465708876933135
1974	7.6692563510136385
1975	6.7729576545071
1976	4.968302799581158
1977	3.985538956623602
1978	4.190044752444471
1979	3.392129004145531
1980	4.130563612134514
1981	14.731629447553605
1982	14.17155449673085
1983	13.480949970243547
1984	13.539565947091514
1985	13.751147950040915
1986	10.563746853082584
1987	12.850650593046046
1988	14.130538438068333
1989	11.812964144935673
1990	11.315415544603919
1991	8.427276379910365
1992	10.355301989779603
1993	10.059951688788452
1994	10.579749596588641
1995	14.620840916451671
1996	12.315869675061114
1997	14.896468320212453
1998	13.804844193221946
1999	12.861233179476589
2000	16.697923050069587
2001	16.337701143289976
2002	16.82814927376831
2003	17.417399805736764
2004	17.987713737417604
2005	19.380591069278662
2006	22.80638210496755
2007	21.881186849522685
2008	22.425843698335594
2009	24.63045297423465
2010	24.07001296726837
2011	32.8200641410131
2012	30.61671096521143
2013	32.34460174095594
2014	35.60401083506433
2015	35.320882168667204
2016	33.21358549970188
2017	35.3429855062865
2018	38.809376013570244
2019	36.92031734960577
2020	38.90217536122022