Year	% of output
1995	27.27272727272727
1996	12.350597609561753
1997	13.836477987421384
1998	18.46965699208443
1999	11.138613861386139
2000	11.160714285714286
2001	11.00196463654224
2002	13.598901098901099
2003	14.941022280471822
2004	12.76073619631902
2005	11.099585062240664
2006	12.044105173876165
2007	14.47721179624665
2008	11.06612685560054
2009	14.06003159557662
2010	28.599999999999998
2011	27.92452830188679
2012	18.270571827057182
2013	28.065241844769407
2014	23.41606792945787