year	2007	2008	2009	2010	2011	2012
Production	175.0	139.0	108.4	149.8	151.1	155.1
Imports	132.3	154.1	140.8	158.6	148.4	133.4
Exports	81.4	69.3	60.2	75.4	84.4	84.0
Net supply	213.7	218.0	204.2	229.3	205.3	202.6