Number of new antibacterial-drug approvals in the US

Source: Drug Makers Tiptoe Back Into Antibiotic R&D. By Hester Plumridge
As Superbugs Spread, Regulators Begin to Remove Roadblocks for New Treatments
WSJ, Jan 23, 2014
http://online.wsj.com/news/articles/SB10001424052702303465004579322601579895822