Year	% of total merchandise exports
1960	0.43050430504305043
1961	0.06205398696866273
1962	0.402975821450713
1963	0.16414970453053185
1964	0.8717310087173101
1965	1.794145420207743
1966	2.126072361059306
1967	0.4916420845624385
1968	0.5128205128205128
1969	0.6168684136445418
1970	0.7869976204510227
1971	1.1763381883444195
1972	0.9182385837147686
1973	1.6871444569583542
1974	0.5294486988613152
1975	1.714921414404448
1976	1.3820619176290132
1977	1.7197801436547853
1978	1.9842726934837118
1979	1.9852367762927905
1980	3.305262197675528
1981	2.028643951817914
1982	3.3585536745643427
1983	2.1465895241163864
1984	3.2951947280731066
1985	6.353815212493544
1986	4.250787078236582
1987	3.0496281012095348
1988	2.6245749719076827
1989	2.6245749732139734
1990	0.6137038900752665
1992	0.05028257676379073
1993	5.779818263169858
1994	6.878506708037083
1995	4.78281598362733
1996	6.046052039645358
1997	5.558783163383932
1998	3.640523616304977
1999	4.6327102418573265
2000	2.159790985036559
2001	1.7906689436883343
2002	1.7730555416154856
2003	1.8053645253993882
2004	3.6361994141920704
2005	3.248010974407555
2006	4.259816005493241
2007	4.931446245574895
2008	5.5722204199381515
2009	2.9828089609114206
2010	1.8999110012392517
2011	2.4537528760628953
2012	6.017841893711676
2013	5.104432616787283
2014	9.02110715346571
2015	11.683968915298852
2016	16.245655874839727
2017	21.47664171950046
2018	19.713104016511135
2019	19.644902624283578
2020	20.99039387428912