Year	% of total merchandise exports
1960	10.284167794316645
1961	9.441489361702128
1962	8.5
1963	7.341490545050055
1964	7.435653002859867
1965	5.795847750865052
1966	8.408679927667269
1967	9.108910891089108
1968	9.895337773549
1969	11.502911970503204
1970	9.891712635155505
1971	10.684264153346493
1972	12.66540756063195
1973	14.019781363872982
1974	14.145220312546867
1975	21.7163762427394
1976	14.239736829925628
1977	8.3349608054635
1978	2.723955321644304
1979	6.857398558024785
1980	11.595547309833023
1981	7.859231257471904
1982	10.77716149117276
1983	8.646697514130167
1984	7.497280903075574
1985	4.471438806747867
1986	4.47143880726811
1987	9.394245943430583
1988	5.598196273881571
1989	6.0695282944686655
1990	14.788390092353081
1991	3.8566424255914367
1992	6.834161256122007
1993	13.522355507088331
1994	11.285519523077827
1995	15.114090787130952
1996	12.086854138508969
1997	11.698180009542794
1998	10.542087758388332
1999	18.140734432960436
2000	17.620294215472732
2001	58.92449780604618
2002	25.777974799273686
2003	35.29078354086322
2004	18.055661804949125
2005	26.98846651863806
2006	23.565579051338513
2007	22.63911074524494
2008	20.873117393584
2009	36.77946657894624
2010	28.58645652591653
2011	29.186300767005598
2012	31.34906627354009
2013	24.773322504361175
2014	27.8574966501127
2015	22.80847883615117
2016	26.729448959845854
2017	21.997358809198612
2018	23.353908368063
2019	23.29855967655385
2020	20.794049345273677