Year	% of total merchandise exports
1960	36.2561750176429
1961	37.99297955812513
1962	43.01932367149758
1963	39.3021472392638
1964	39.014869888475836
1965	35.62458691341705
1966	33.40485228585575
1967	36.25132368513943
1968	34.132123331915366
1969	31.867305704351097
1970	26.63104648304591
1971	26.96791342320106
1972	32.0690699787943
1973	37.928244342684394
1974	39.03236869179835
1975	25.18822431637356
1976	42.64741639339953
1977	47.380806040916674
1978	54.53838980416538
1979	72.73191785438614
1980	77.51479872745718
1981	82.8116686258739
1982	80.07320583210736
1983	73.90632193204016
1984	78.177677988503
1985	79.74467654513614
1986	72.61127122710417
1987	65.99864323847784
1988	68.47469824744417
1989	67.8863240989138
1990	67.90884534941159
1991	78.36959679202225
1992	80.35606730517333
1993	81.55596666888435
1994	78.22875359839908
1995	77.79360795452583
1996	80.20166036277301
1997	77.2156286875054
1998	71.6415284532543
1999	66.29702580980094
2000	65.95238258053388
2001	58.43965416004813
2002	50.33780063383673
2003	55.93954887203009
2004	56.115241367939994
2005	56.94918915016931
2006	55.08233158342666
2007	47.68091746661077
2008	59.24139667302628
2009	52.8734183723292
2010	55.36169864089646
2011	54.33800596916307
2012	51.395172264245645
2013	51.235893688945865
2014	53.81073161136089
2015	56.33258296025711
2016	69.73212992620034
2017	67.9239856379876
2018	65.48049099847151
2019	56.128824005074065
2020	58.14185214948774