Business growth in the Greater Scottsdale Airpark area will bring another 13,000 jobs by 2020, most of them in professional, technical and financial services occupations, according to an updated economic study. The study also cited the need to redevelop older portions of the Airpark and recommended a shift toward more mixed-use developments to help keep the area competitive with other emerging job centers around the Valley. The study by Gruen Gruen + Associates updates a similar report from 1999. Despite the current recession, job growth will resume and will average roughly 2 percent per year, increasing the total number of jobs from about 42,500 in 2007 to 55,000 in 2020, according to the report. The full report and an abbreviated summary can be found at http://www.scottsdaleaz.gov/economics.asp