Year	% of total merchandise exports
1960	3.7232531500572734
1961	2.730067636810822
1962	2.395553852050594
1963	2.838687864081089
1964	9.87288312524979
1965	10.8037649719432
1966	6.989171256105023
1967	6.912418531684156
1968	7.2483505498457435
1969	6.721868785156612
1970	6.706591562135156
1971	6.950450089733883
1972	6.2343980451390255
1973	5.816209472354237
1974	5.335158529777897
1975	3.6136127944020164
1976	2.511932241085616
1977	2.7784191655483736
1978	2.0751181419882174
1979	2.16109376263585
1980	2.5443308293641307
1981	5.342599487248548
1982	5.465850396477736
1983	5.148827207419152
1984	4.275137676223522
1985	4.079008873568547
1986	3.6218387286007605
1987	4.155552543803086
1988	2.7266312565806543
1989	5.357099905925879
1990	5.4254828791177
1991	6.021327701774877
1992	9.40292705312183
1993	9.84092175941595
1994	11.195436527275545
1995	11.890324741671934
1996	12.31824328731598
1997	13.139817094943988
1998	12.244875894116623
1999	14.357459034446851
2000	17.003366367128184
2001	11.114522719423759
2002	12.376785357552706
2003	12.663676904749005
2004	11.89557070802949
2005	12.48532237896414
2006	13.231922401911952
2007	13.66425044366478
2008	15.932206230526443
2009	18.09905513528691
2010	24.613865082261004
2011	23.606323164511593
2012	26.744101428385058
2013	27.498267406219277
2014	29.355381650465457
2015	27.882232658225515
2016	27.55537690904796
2017	25.3051760109479
2018	25.46754468455236
2019	25.67556580091744
2020	22.495324558045844