A measure of future U.S. economic growth climbed last week, while the annualized growth rate rose to its highest level in over a year, a research group said on Friday.

The Economic Cycle Research Institute, a New York-based  independent forecasting group, said its Weekly Leading Index  rose to 125.4 in the week ended Sept 14 from 124.7 the previous  week. That was originally reported as 124.9.

The index's annualized growth rate jumped to its highest level since late July 2011 at 2.7 percent from 1.9 percent.