Year	% of merchandise exports
1963	0.590484055079889
1964	0.7360758034618772
1965	0.78479806539244
1966	0.8551732819819777
1967	0.48337288034810366
1968	0.5092247556706732
1969	0.6453472450078227
1970	1.198376700139374
1971	1.1393063596254216
1972	0.8923839661775977
1973	0.7232945438511834
1974	0.25987866324013376
1975	0.2412017306636929
1976	0.07010650827002154
1977	0.09253993795460588
1997	0.5979745181394716
1998	0.5748873928313113
1999	0.8744266053383712
2000	0.7706668371846886
2001	1.0335272381191432
2002	0.8423529695593558
2003	1.0951752752456494
2004	1.0234453258044278
2005	1.166036172765447
2006	2.416494821888785
2010	3.126559125141732
2011	2.194941468793625
2013	3.3891166213619366
2014	2.8965309100524625
2015	2.885625211760175
2016	3.1613391773525903
2017	3.2408706464096495
2018	2.7659850756943776
2019	6.698907694328378
2020	5.967713601441542
2021	6.471826985627612