Year kt of CO2 equivalent 1990 45216.04774 1991 43476.88846 1992 41732.62334 1993 41049.51674 1994 39923.10035 1995 38939.64262 1996 38173.17918 1997 37960.95161 1998 36504.91177 1999 35622.76067 2000 34270.16313 2001 33464.66107 2002 33247.50948 2003 33167.58774 2004 32533.91082 2005 32828.35676 2006 33233.76165 2007 32925.37199 2008 32586.01528 2009 32266.18301 2010 32804.14255 2011 31721.26952 2012 31221.23661 2013 30952.48647 2014 30235.51144 2015 29825.12512 2016 29003.93462 2017 29354.8708 2018 30235.07448 2019 29697.60317 2020 29540.38185