Emergency Supplemental Appropriations Legislation for Disaster Assistance: Summary Data [Updated January 8, 2008] [open pdf - 112KB]
"This report provides summary information on emergency supplemental appropriations enacted after major disasters since 1989. During the 20-year span from FY1989 through the present, Congress appropriated more than $213 billion for disaster assistance. Most of the appropriations were preceded by a presidential request for supplemental funding. Some appropriations have been offset by rescissions."
CRS Report for Congress, RL33226