Employment growth in metro Phoenix was robust, gaining 58,500 jobs in the 12 months ended March 31, showing a gain of 3.1%, nearly double the national rate.  Improvement was widespread, with all sectors showing net gains.  Construction led the way with the addition of 14,000 positions (badly needed) with the sustained expansion of real estate development.  Education and health services followed closely adding 13,900 jobs, bolstered by both Arizona State University and the booming bioscience field.  Professional and business services also added 11,600 jobs, as the metro Phoenix area is competing with Texas in corporate relocation and expansions.