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CO2 Emissions by Bunker Fuels (MtC/year)
Summed over All Countries in
http://cdiac.ornl.gov/ftp/ndp030/nation.1751_2013.ems
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Year  Bunker
1950     35
1960     65
1970    119
1980    122
1990    148
2000    226
2005    262
2010    306
2011    313
2012    299
2013    304
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