2012 2012 2013 2013 2014 2014 2015 2015 718,323 724,552 692,982 664,995 716,807 2010 723,969 640,176,434652,547,882 619,663,619 584,547,032 542,982,449 607,216,498 186,861 171,917 150,308 150,253 347,423,133 329,575,122 309,169,588 306,294,599 Measuring and reporting of our environmental performance increases accountability and drives results.