Year	% of total exports
1995	34.04875008201567
1996	29.110555216595518
1997	32.07058874309402
1998	33.14937095032405
1999	34.3418899875801
2000	30.052782049202335
2001	34.537503337120754
2002	39.126959957034785
2003	38.43449204992973
2004	41.93401849331617
2005	44.82596856056221
2006	44.35408023981148
2007	43.81407474949563
2008	47.208977878981386
2009	48.45960787841525
2010	45.652495288939186
2011	42.54990024470062
2012	40.73811169578272
2013	40.628941873375645
2014	42.898543205501696
2015	47.943110801422264
2016	49.861731375987
2017	50.382855041818566
2018	51.4968287134821
2019	51.01655689265749
2020	19.184084523670954