PORTLAND, Maine — A conservative think tank says Maine businesses have been losing more jobs on the average from closures than they created through startups between 1993 and 2007.

The Maine Heritage Policy Center report released Monday details the opening and closing of Maine businesses and a resulting loss of more than 9,000 jobs during that period. Information is drawn from a database of more than 161,000 commercial, not-for-profit and government establishments in Maine.

The study says that between 1993 to 2007, Maine establishments, on average, created 29,755 jobs per year from startups, but lost 30,359 jobs from closures, creating a job deficit of about 604.