Year	% of merchandise exports
1973	10.72815657390015
1974	20.52342448495238
1975	3.4332560257480873
1976	5.269851000021405
1977	13.403635365508052
1978	11.558524157446936
1979	15.207347025558782
1980	99.87790448757237
1983	99.72620068075332
1984	99.83769085650712
1985	99.64737110446742
1986	98.35045027843077
1987	95.01065755566025
1989	96.58405662105358
1990	67.0925934667975
1991	76.70177335103682
1992	90.14297600461688
1993	94.12308096350048
1994	92.63412161274333
1995	97.8292529679419
1996	93.58804377605293
1997	93.22062621753525
1998	84.15812258739493
1999	99.40189372742057
2005	82.38897610911951
2007	78.95208754374723
2008	79.86346701882906
2009	69.66412787128229
2010	66.9546680335689
2011	80.61613977903438
2012	87.66634207439738
2013	57.929484366622084
2014	74.41837045682209
2015	72.56401400020722
2016	74.41836576013792
2017	80.32955641454743
2018	80.49247928203538
2020	84.12111517515352
2021	97.22115919647891