years | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
Gas emission quantity (m3/t) | 10.60 | 9.80 | 11.30 | 10.40 | 12.50 | 11.70 | 13.20 |
years | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
|
Gas emission quantity (m3/t) | 11.30 | 13.80 | 14.20 | 12.90 | 14.50 | 14.90 |
|