FIGURE 1.3Greenhouse gas emissions in the United States, 1990–2007, in millions oftonnes CO2equivalent. The “other” greenhouse gas (GHG) emissions shown on thediagram include methane and nitrous oxide, converted to CO2-equivalent units. The1990 and 2007 point estimates have been rounded to two significant figures.
Source: Energy Information Administration, 2008b.
FIGURE 1.4Energy use in the United States per dollar of GDP and per capita, with 1980energy use per dollar of GDP and per capita set to 1.0.