Year	% of total exports
1995	26.94066868517683
1996	24.668591678697993
1997	25.526475139608422
1999	35.36409499268009
2000	31.503239988559173
2001	30.680487457774476
2002	33.36532017362921
2003	29.43107788709971
2004	26.237401664020805
2005	26.12263802034136
2006	25.870847316444618
2007	23.398081745924156
2008	22.11424771882856
2009	27.151351254113017
2010	23.131682745140807
2011	24.042114014055784
2012	23.19891543065312
2013	23.913532772455177
2014	25.35927955458487
2015	28.019169264669586
2016	27.87643851612234
2017	27.300640911159796
2018	26.37669659126669
2019	28.334360712041228
2020	10.492784901611538