Year	% of merchandise exports
1974	13.517611470890882
1975	13.092245662542648
1976	15.05868760407193
1977	17.378745505813125
1978	15.809461168730833
1979	16.523653789369266
1981	10.171946037025716
1996	26.694014766713497
1997	28.59135501001267
1998	27.79961917209885
1999	28.42094132782475
2000	28.970890666118933
2001	29.076509385736124
2002	34.67158562050055
2003	30.751520616752252
2006	28.890976308298207
2007	28.086498860022495
2008	29.317298377455145
2009	27.936072620715457
2010	28.327913896994797
2011	24.83522247779409
2012	25.53853528991388
2013	26.961833846732233
2014	29.492854781766408
2015	27.706468918963644
2016	26.552749015702773
2017	23.996123638203102
2018	24.039959694484715
2019	23.88514680021841
2020	22.456145555301976
2021	21.36085178517314
2022	20.757790471269292