Louisiana was the most improved state for business in the United States in a nationwide survey of the readers of Chief Executive magazine. Louisiana's ranking climbed from 27th in 2011 to 13th this year, the largest improvement of any state.

Since 2008, Louisiana has improved 32 spots, also the largest gain by any state in the country.

The magazine asked CEOs to grade states on areas including taxes, regulatory environment, workforce quality and living environment.