Year	% of merchandise exports
1974	20.51422942176414
1978	24.024631925584906
1979	26.62688177482693
1980	15.652824173424023
1981	14.871659808887463
1997	44.844409539338145
1999	43.45265710742669
2000	46.036034758546485
2001	44.90852746497272
2002	50.48092348703485
2003	47.298562945269374
2004	47.32698540314505
2005	46.2627280557368
2006	43.41321587776072
2007	43.9630351329586
2008	44.74774885460575
2009	41.371703407528
2010	41.839588861835274
2011	38.25664144257322
2012	39.293849886026
2013	38.880937580002154
2014	41.471433460944425
2015	33.41443009556071
2016	33.755572067356525
2017	31.691289302636505
2018	33.50975529163546
2019	31.626483348400484
2020	28.450677843885316
2021	27.649150550746285
2022	27.58255282001322
2023	37.282840578903766