The graph shows five of the illustrative "marker" scenarios from the IPCC's Special Report on Emissions Scenarios (SRES). The SRES report contains a total of 40 greenhouse gas emissions scenarios. Between the years 2000-2009, growth in CO2 emissions from fossil fuel burning was, on average, 3% per year, which exceeds the growth estimated by 35 of the 40 SRES scenarios (34 if the trend is computed with end points instead of a linear fit) (Le Quéré et al., 2010).
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