The Dodge Momentum Index jumped 9.2% in December to 134.6 (2000=100) from the revised November reading of 123.3. The Momentum Index, issued by Dodge Data & Analytics, is a monthly measure of the first (or initial) report for nonresidential building projects in planning, which have been shown to lead construction spending for nonresidential buildings by a full year. The commercial component of the Momentum Index rose 14.0%, while the institutional component rose by 0.3%.