WRI has published this graphic as part of its recent report: Leveling The Carbon Playing Field: International Competition and U.S. Climate Policy Design A footnote indicates that 'bubble' size indicates the total CO2 emissions from the industry in 2002. Two thousand two is fairly close to what many would use as a "baseline."
Take note of the highly climate cost-exposed sectors: chemicals, refining, ferrous metals, food and beverage, paper, etc. These are the sectors to watch closely on their Congressional lobbying positions, donations to politicians, and to Think Tanks and PACs. Of critical importance, will be opinion leader industries, per sector, making commitments to GHG reductions and energy efficiency.
Finally, consider the cost exposure linkage between the paper, chemicals, food and beverage sectors (tied by packaging and distribution cost impacts). Combine that with the global food price hikes driven by biofuels, in part, and it is clear that Food & Beverage is in for a world of climate cost pain (as are consumers). Although, peak oil and the growing demand for energy in China and India are of similar importance.