Year	% of total merchandise exports
1972	59.03894520234737
1973	59.39171591004565
1974	50.50665434914403
1975	46.13573830632834
1976	54.959792218170925
1977	48.91256196603734
1978	47.27807653339568
1979	53.06069566807914
1980	48.47184783021375
1981	47.13085234093637
1982	50.49865895893551
1983	48.95922480192143
1984	52.909473503392604
1985	51.25188959745317
1986	60.49093834021442
1987	69.93963595839524
1988	70.47779851757763
1989	71.39162615696539
1990	75.73937699675977
1991	77.20273001836617
1992	81.06440428856409
1993	81.7167161851545
1994	82.65610221978258
1995	84.88034418698764
1996	85.40859397117917
1997	87.82976731922113
1998	90.73267881777973
1999	78.71122314776072
2000	79.77490896849646
2001	78.90970225243356
2002	77.81394637721235
2003	78.62723048378807
2004	81.20928598285508
2005	78.26267850344612
2006	77.93616308191473
2007	77.87194078237114
2008	76.37659201320892
2009	76.953362968252
2010	74.36327419989507
2011	74.87618375929183
2012	73.80788422808625
2013	73.25584348706518
2014	72.64876075563434
2015	72.2304925586384
2016	71.79180938607105
2017	71.52860966158073
2018	71.64590524570035
2019	72.73591851005504
2020	73.89576950799675