JEFFERSON CITY, Mo. (KQTV) -- An economic impact analysis study conducted by the University of Missouri showed the state's park system is positive for the state's economy. The study showed Missouri's parks generated about $1.5 billion in total business sales and supported nearly 12,000 jobs. "We've always known Missouri's 93 state parks and historic sites are a tremendous asset to the state," Missouri Department of Natural Resources Director Kurt Schaefer said.