Year	Mt of CO2 equivalent
1990	-44.722718599979814
1991	-45.76326792234597
1992	-42.05526201163662
1993	-38.95459777524431
1994	-39.88648185982108
1995	-39.26649077295817
1996	-40.06308337792717
1997	-41.84403233097128
1998	-41.134549859179735
1999	-39.268541135262055
2000	-40.975497038960256
2001	-38.72337109789074
2002	-41.0289477875767
2003	-39.765834673474195
2004	-36.410848466744206
2005	-36.24393643204967
2006	-34.988259324776244
2007	-34.19638190205781
2008	-33.8787047494935
2009	-41.638330677783614