Year	% of total exports
1995	23.035893188444202
1996	23.249417590958725
1997	22.73487146861392
1998	23.50579128440367
1999	24.244181704139724
2000	23.099829085329407
2001	21.77722137558755
2002	19.34165787453249
2003	17.766456744815752
2004	18.01138689025003
2005	19.22011593681488
2006	18.87224474502874
2007	16.89537063821853
2008	15.586130958737476
2009	17.784240229330862
2010	15.715117777076088
2011	11.242670900226072
2012	13.233691620799753
2013	13.027699518353266
2014	14.099628556763532
2015	10.708804814216585
2016	10.095192732395008
2017	10.134062660129088
2018	16.9418261648048
2019	19.52505981051747
2020	8.961669783523