Year	% of merchandise exports
1962	47.83107640338166
1963	41.134161805310924
1964	40.82592945982489
1965	34.95375151478715
1966	32.51470613663548
1967	26.137643970450913
1968	29.147828142507908
1969	31.1645862423251
1970	32.984839201431214
1971	23.956588923488336
1975	5.620817179286092
1976	7.918076217563609
1977	6.807380642630405
1978	7.6033683398052885
1979	6.084875796838976
1981	6.774243971580418
1982	6.219206099845043
1983	7.117305541771063
1993	2.9949803519362854
1994	8.837313344326205
1996	13.101507663451939
1997	13.497307709100243
1998	9.71251677842865
1999	13.071087007542737
2000	11.824763291536632
2001	11.132544856173135
2002	9.347002121983621
2003	5.468488477593933
2004	9.824698013971954
2005	7.532702239461579
2006	6.71132164517058
2007	8.369340950961218
2008	5.568967627576155
2009	8.881060986575823
2010	3.565750078686996
2011	4.77114703374941
2012	1.801381318443818
2013	1.6060242684598949
2014	1.700146766219301
2015	2.202284418571769
2016	3.665202527894541
2017	6.1112270068084795
2018	4.822915801634612
2019	4.804306120143051
2020	6.543241815331689
2021	5.928669654652365