Year	% of total exports
1995	76.70984895627086
1996	76.10045908722657
1997	75.58663064780974
1998	71.99746822089773
1999	72.3928603787261
2000	71.90260949458988
2001	74.9561067843155
2002	71.38086178424395
2003	71.33673761380628
2004	69.7031827568215
2005	68.00572287353438
2006	65.80414190252324
2007	64.62398163295063
2008	61.75233534421592
2009	66.14324765632425
2010	67.5530223954383
2011	64.83031858826797
2012	63.476177496696536
2013	63.565970998473865
2014	65.64109973546321
2015	74.76501263055655
2016	79.64019109964957
2017	78.42800420321359
2018	79.04232343489956
2019	80.36659770769242
2020	59.6415016945382