CO2 intensity (kg per kg of oil equivalent energy use)
Year CO2 Intensity (kg/kg oil equivalent)
2003 2.03
2004 2.05
2005 2.07
2006 2.09
2007 2.12
2008 2.15
2009 2.13
2010 2.11
2011 2.10
2012 2.12
2013 2.14
2014 2.16
2015 2.18
2016 2.19
2017 2.21
2018 2.23
2019 2.25
2020 2.20
2021 2.22
2022 2.24
2023 2.26