Year	% of total merchandise exports
1960	92.37588652482269
1961	90.19963702359347
1962	94.5054945054945
1963	86.2251655629139
1964	79.26015767131595
1965	75.36309844002152
1966	71.3527851458886
1967	66.80182463253928
1968	63.87907324693612
1969	62.76963557838765
1970	61.25698680394882
1971	64.72080499869088
1972	64.81931139437845
1973	65.1557712247137
1974	66.71485963433949
1975	66.66865690909971
1976	69.23448754962584
1977	73.53194567145256
1978	69.82366238804235
1979	63.32263222979042
1980	59.451563881848536
1981	51.306377033827246
1982	56.659570266534296
1983	60.83272295053925
1984	64.17680675101225
1985	67.72119699704984
1986	74.40364576578476
1987	67.95038480772656
1988	64.52403683267427
1989	63.58022427486046
1990	59.98615460278736
1991	58.06419131968082
1992	52.252116835360205
1993	56.5463050850185
1994	52.111627790016456
1995	57.0121250739014
1996	58.51872975393479
1997	68.00573875444316
1998	74.95063539877668
1999	76.06084917110437
2000	58.77524111235356
2001	46.744814267540725
2002	65.92271908689888
2003	65.1094666395528
2004	64.27975150702967
2005	61.894483267079856
2006	59.99724176072537
2007	56.68773111956579
2008	55.32009973443035
2009	58.4668156108211
2010	56.609078280841786
2011	60.04813467341214
2012	57.76180514659073
2013	56.58024411536601
2014	56.305374771280256
2015	54.207991727051606
2016	54.271960096868575
2017	54.392215325231064
2018	56.33547397895457
2019	53.497937051831514
2020	53.30906630586281