Year	% of merchandise exports
1963	86.58671154008091
1964	87.99886737551343
1965	86.72392673715737
1966	87.27069374634996
1967	90.37252785488992
1968	89.25440945880379
1969	88.89596688700118
1970	88.61827106354882
1971	87.31187156221277
1972	88.25513026799517
1973	89.76931988421963
1974	97.33175846181769
1975	97.04257553720237
1976	97.61446461097569
1977	99.15105768272394
1997	85.80039504300606
1998	81.2977718272111
1999	86.07002642700856
2000	88.8675310777915
2001	85.20511317771084
2002	70.30798978925708
2003	79.4780554871552
2004	78.95868775432464
2005	83.0809475304939
2006	83.28382001992189
2010	70.80181894133794
2011	70.50412428047635
2013	71.71726873200174
2014	67.7953155547417
2015	57.793086118242265
2016	67.58622307015033
2017	71.05788430952607
2018	68.67773373159662
2019	38.531650465271824
2020	29.163786895439216
2021	47.91195312864378