Year	% of total merchandise exports
1960	2.3734360988717205
1961	2.7059107358262966
1962	2.76908888106021
1963	2.1667675598776706
1964	2.285298187312467
1965	2.1421634868807797
1966	2.0785960099390848
1967	2.3088654657676506
1968	2.197699500924256
1969	2.32495224527215
1970	2.3717847102978014
1971	2.6644712924781615
1972	2.593538121412554
1973	2.6914411014658213
1974	3.4714706014818386
1975	3.228803963817327
1976	2.353828738991866
1977	2.490798438426907
1978	2.2071806746173626
1979	2.247115656743385
1980	2.4571998192822764
1981	2.3871638143977347
1982	1.688177504062386
1983	1.2854252025469854
1984	1.3494308336045238
1985	1.3324770422259784
1986	1.3605723216136163
1987	1.2802221052839509
1988	1.144159105018087
1989	1.2096443081685508
1990	1.2696713539539226
1991	1.3966966804606278
1992	1.601534188180087
1993	1.8216781589446185
1994	1.8217296853652813
1995	1.678452642120631
1996	1.6360655288489234
1997	1.8645211923562783
1998	2.1199749219211075
1999	1.8136431392379662
2000	1.8939482016968112
2001	1.9581941841024544
2002	1.7956461214528123
2003	1.5671189963437804
2004	1.7255302343824337
2005	1.8760584147765078
2006	2.2153404635577703
2007	2.4172850504762313
2008	2.7380539469809313
2009	2.5353152614208065
2010	2.935432941345209
2011	3.1622440915556904
2012	3.163116147219046
2013	3.2121975407752057
2014	3.195693079761673
2015	3.2038267481924154
2016	3.0815701438751018
2017	3.1456336047683497
2018	3.18882722466749
2019	3.2842632078255605
2020	3.0925134150374722