The record shows that like other industrial states such as Illinois, Michigan and Ohio, Massachusetts lost many manufacturing jobs during the period 2003-2007, when Romney was Governor of Massachusetts. At the end of 2002 there were 338,000 manufacturing jobs in Massachusetts, by 2007 this had declined by 12% to 298,000, according to Andrew Sum, an economist at Northeastern University. Romney cites a drop in the unemployment rate from 5.6% to 4.7%. Prof. Sum who heads the University's Centre for Labor Market Studies, says this was people left the workforce during this period in large numbers. He says only Louisiana of all U.S. states had a bigger decline in the labor force when it was hit by Hurricane Katrina. The dot com bubble burst during the period before Romney took office. Massachusetts had already lost 158,000 jobs in 2001-2002 according to the Bureau of Labor Statistics. Romney was unable to do much to reverse the job losses that continued during his term in office.