Year	% of total merchandise exports
1969	81.19658119658119
1970	60.08230452674898
1971	85.94594594594595
1972	87.3076923076923
1973	81.20805369127517
1974	80.28059236165238
1975	90.08052135225742
1976	79.59706551663776
1977	67.75570735214812
1978	69.38237075055505
1979	72.6159112324763
1980	66.67401505369571
1981	69.08321540164496
1982	72.25748995250274
1983	73.0309984053518
1984	56.51623872802535
1985	74.06724599289416
1986	61.79006505026612
1987	64.69310778374671
1988	83.75815056312982
1989	58.312473582720195
1990	55.68462717820448
1991	61.24270100716198
1992	43.113554065939034
1993	58.792470925570264
1994	50.69654393724869
1995	48.09370957907044
1996	26.24337031411964
1997	63.78712919949303
1998	52.29056950793714
1999	69.09064494330678
2000	65.09668333600575
2001	79.94479069676609
2002	52.60666449565896
2003	60.686840546371855
2004	53.607871792316764
2005	58.37639973669042
2006	55.831919333779226
2007	57.47890286198651
2008	56.865218785071214
2009	56.56076934044307
2010	82.17152151613877
2011	74.66965652028196
2012	60.75657787425149
2013	77.86225781459957
2014	57.31288776807097
2015	50.902430874792124
2016	51.899769460427834
2017	54.92794523105463
2018	59.909589024118205
2019	62.29624256667454
2020	71.57728922268622