In 2006, the Bush administration sought over $100 billion for repairs and reconstruction in the region, making the storm the costliest natural disaster in US history. This does not account for damage to the economy caused by potential interruption of the oil supply and exports of commodities such as cotton. Before Hurricane Katrina, the region supported approximately one million non-farm jobs, with 600,000 of them in New Orleans. One study, by Mark Burton and Michael J. Hicks, estimated the total economic impact to Louisiana and Mississippi may exceed $150 billion.