Year	% of merchandise exports
1974	13.540865930531634
1975	13.117445110577169
1976	15.085732993411188
1977	17.4112933015796
1978	15.830382700567396
1979	16.548911230011665
1981	10.173908898568731
1996	26.747284365733066
1997	28.64644039750333
1998	27.856066745974253
1999	28.47687351320081
2000	29.014205564876566
2001	29.120155113732206
2002	34.73068149913131
2003	30.80730675461098
2006	28.93200434776329
2007	28.13176514406054
2008	29.361680907898336
2009	27.959298575209726
2010	28.3583878893163
2011	24.805196569221053
2012	25.573701956157322
2013	27.004506518852235
2014	29.540434318031025
2015	27.740516666623044
2016	26.580229148206563
2017	23.993366969604555
2018	24.04529734231898
2019	23.889899506263266
2020	22.477685240955594
2021	21.385473947981897
2022	20.779321021199763