Year	% of merchandise exports
1977	21.207617046452267
1978	22.17734789969278
1979	25.24494605470636
2000	42.998215414221995
2001	44.09126954286719
2002	46.37567284021162
2003	44.33572145005237
2004	44.24465781638588
2005	43.9475177269319
2006	44.80763983190392
2007	43.237530111932735
2008	45.38676803512052
2009	44.84858579812479
2010	40.64485036517008
2011	40.450646502440314
2012	41.344623369632245
2013	44.39620724992465
2014	29.171449457987308
2015	43.34809480648497
2016	29.45756895956681
2017	29.656852244458072
2018	28.993009432815672
2019	29.285083763981003
2021	29.968816607959784