totAl co1600 1 400 1 200 1 000 800 600 400 200 0 2005 2006 2007 2008 2009 2010 2011 totAl sox emissions 16 14 12 10 8 6 4 2 0 2005 2006 2007 2008 2009 2010 2011 totAl nox emissions 45 40 35 30 25 20 15 10 5 0 2005 2006 2007 2008 2009 2010 2011 g fuel/tonne nm 30 25 20 15 10 5 0 2005 2006 2007 2008 2009 2010 2011 * Not incorporated in this environmental accounting due to external management.