Year	% of total exports
1995	27.969729100588765
1996	28.008393654705046
1997	29.75627763739732
1998	29.85524320541233
1999	28.752804055402574
2000	26.42042963612449
2001	23.374499752959466
2002	27.54719832087444
2003	26.21171592103727
2004	27.02301904537972
2005	26.199680678977337
2006	29.580786626997092
2007	29.33659891903978
2008	27.868335125555348
2009	31.389207222349498
2010	34.426428681879415
2011	31.657904715057256
2012	35.8068358567462
2013	36.16173515348912
2014	35.54283433278596
2015	35.182732205553755
2016	36.51196421140238
2017	38.80381361357621
2018	41.2186677616231
2019	41.83637028778488
2020	16.707571977614457