Year	% of merchandise exports
1968	99.73878133877028
1969	99.72468988016695
1974	99.77618176362827
1975	99.31661193980088
1976	99.69117164325702
1977	99.66142980262231
1978	99.18434745482564
1979	99.09780330421168
1980	99.18750179249628
1981	99.27039751919581
1982	98.78636972125908
1985	96.37613796797895
1991	94.09350510230178
1992	88.08155402858186
1993	91.96132349784683
1994	90.7690216075904
1995	87.60138869563045
1996	89.5496566032559
1998	85.29613929719625
1999	89.4049029004601
2000	92.2645074235409
2001	89.47096954187307
2002	89.63268194567097
2003	89.67784926594686
2004	89.82017747121829
2005	91.04135026817704
2006	90.98137891668034
2007	90.17195023854902
2008	91.37148327450923
2009	87.80417479491472
2010	87.62086249214673
2011	88.7250786188123
2012	88.6274591343223
2013	87.5705430575713
2014	85.16579144090738
2015	78.43077337588036
2016	77.5498175972453
2017	79.84681520284514
2018	81.01698374859043
2019	79.62151964429772
2020	67.62261989669551
2021	77.49453615785431