sentences:  In 2011, Tetra Pak published a set of sustainability targets, which included maintaining its CO2 emission levels at the same level until 2020 and increasing recycling by 100 percent.Previous Tetra Pak sustainability targets (2005–2010) were met and exceeded.Maintaining current CO2 emission levels until 2020 would result in a 40 percent relative cut in emissions at an average growth rate of five percent per year, according to "Food Production Daily".