Year	% of merchandise exports
1971	5.527868348375231
1972	3.5251179199813745
1973	1.866885720481991
1974	1.2680744208007293
1975	1.7854460212037266
1976	2.5996074685622848
1981	3.161590271226109
1982	3.365482345482778
1983	2.490995057206621
1984	2.618854709510153
1985	2.5179085666765926
1986	1.5269633874478763
1987	1.4935674880297334
1998	3.1261400923055667
2000	2.18993147924935
2001	4.1577644802266365
2002	4.099463405752716
2003	4.970702235358089
2004	3.8765864457839734
2011	5.187305609551615
2012	8.729485716386867
2019	1.5454402660506341
2020	1.3302512981213024
2021	2.2325033552054174