Year	% of total merchandise imports
1963	0.08438818565400844
1964	0.1040943789035392
1965	0.06236357966947303
1966	0.029342723004694836
1968	0.03227888960619754
1969	0.022143489813994686
1970	0.037537537537537545
1989	0.15568391489926775
1990	0.2251840261532429
1991	0.3799180257712736
1992	0.8834515514903447
1993	1.7769807425135127
1994	1.9879953494437028
1995	2.5444675966832127
1996	2.850168939802872
1997	2.4175655703583314
1998	1.788171192800412
1999	0.982490310603534
2000	4.095781107374542
2001	4.09563684078774
2002	4.09323722917128
2003	4.0752937254516475
2004	4.0789973205256445
2005	4.08986636337491
2006	4.09566401874358
2007	4.095664496315907
2008	4.095601550954767
2009	4.095496605555017
2010	4.0952373602508905
2011	4.094740792747909
2012	4.0936656080677265
2013	4.091347220224609
2014	4.086632065595658
2015	4.076719305903758
2016	4.068520747110575
2017	4.022763014320272
2018	5.408861582488108
2019	3.0451411311432954
2020	3.9794094211480093