Construction employment increased in 183 metropolitan areas between December 2015 and December 2016, according to analysis of federal employment data by the Associated General Contractors of America (AGC). AGC called the new jobs report “disappointing,” as employment in the sector declined in 110 of 358 metro areas and was stagnant in another 65.

“There are two main reasons so few areas added construction jobs last year—they couldn’t find enough new workers to hire or they couldn’t find enough work to require new hiring,” says AGC chief economist Ken Simonson. “In some markets, the solution is more workforce development measures, while other markets need new demand for construction before firms will begin adding jobs.”

The largest job losses from December 2015 to December 2016 were in Houston-The Woodlands-Sugar Land, Texas (-11,200 jobs, -5 percent), followed by Orange-Rockland-Westchester, N.Y. (-5,500 jobs, -12 percent); and Los Angeles-Long Beach-Glendale, Calif. (-5,200 jobs, -4 percent). The largest percentage declines for the past year were in Kankakee, Ill. (-15 percent, -200 jobs); Casper, Wyo. (-13 percent, -400 jobs) and Wichita, Kansas (-13 percent, -2,100 jobs).

Denver-Aurora-Lakewood, Colo. (10,400 jobs, 11 percent) added the most construction jobs during the past year, followed by Orlando-Kissimmee-Sanford, Fla. (9,700 jobs, 15 percent); Las Vegas-Henderson-Paradise, Nev. (8,700 jobs, 16 percent) and Tampa-St. Petersburg-Clearwater, Fla. (8,700 jobs, 13 percent). The largest percentage gains occurred in Boise City, Idaho (18 percent, 3,400 jobs), followed by El Centro, Calif. (17 percent, 500 jobs); Las Vegas-Henderson-Paradise and Orlando-Kissimmee-Sanford. The number of metro areas with year-over-year job increases—183, or 51 percent—was the lowest since September 2012, Simonson notes.