Year	% of merchandise exports
1974	30.570394950426586
1975	29.188490456037847
1976	30.10631505034794
1977	29.243123658961597
1978	33.59863316235641
1979	37.516269483062196
1981	41.00035615916566
1996	32.17243886562374
1997	29.485688641358486
1998	31.373857602829442
1999	31.54597799428153
2000	32.33811543122726
2001	31.571706619250303
2002	31.716183421693934
2003	31.22528111234673
2006	33.37704716202018
2007	40.995919630330995
2008	31.795657326503655
2009	39.72440611761955
2010	38.95623416688512
2011	41.004663213910774
2012	40.024152477747165
2013	39.16989710022638
2014	39.887249301163195
2015	35.69924587224819
2016	34.922227459661016
2017	38.46416267371774
2018	39.31004057348157
2019	38.51872222383076
2020	37.43604065295861
2021	36.87495865765039
2022	39.331152606463114