Year % of total exports 1995 19.415634578380995 1996 22.707401193215297 1997 20.9715384629076 1998 23.35735959970659 1999 24.689385346419765 2000 25.760131403362035 2001 31.065192555389793 2002 30.002010583607415 2003 30.825748002988906 2004 31.313979491304544 2005 32.7022972875271 2006 35.53941895426675 2007 34.68547497662186 2008 29.0797222179883 2009 33.25164489344375 2010 30.23058229869185 2011 28.579224304145328 2012 26.256529214176773 2013 25.145331587473578 2014 25.045934365952938 2015 23.323696315160795 2016 23.03285094442144 2017 23.395690394641402 2018 22.009821226176527 2019 22.586733226859497 2020 12.022791927839881