Year	% of merchandise imports
1966	4.950010099522735
1968	4.911383905615483
1969	5.430460601385338
1970	5.858443311590454
1971	5.097795392465251
1972	5.59655532944737
1973	4.768725702884808
1974	4.742498541076932
1975	3.328574816217009
1976	3.3152111937870865
1977	4.337162834731549
1997	3.8410602906470044
1998	3.2426455222082375
1999	3.0882766108758375
2000	2.601145522127437
2001	2.4415859479533437
2002	2.307622354879652
2003	2.7792335392694336
2004	2.7501297950150954
2005	2.479151209287436
2006	2.233616166451181
2007	1.905097546281289
2008	1.701343976959313
2009	2.0317444784287675
2010	2.0937070497231125
2011	2.082090756843998
2013	2.058166382825465
2014	1.7491323350887247
2015	2.012556945272109
2016	1.8757822473274572
2017	1.7758153554096274