NEW YORK, June 18 (Reuters) - A measure of future U.S. economic growth fell to a 45-week low in the latest week, indicating that the economy is about to slow, a research group said on Friday.
The Economic Cycle Research Institute, a New York-based independent forecasting group, said its Weekly Leading Index fell to 122.5 for the week ended June 11, down from 123.0 in the prior week.
That was the lowest level since July 31, 2009 when it stood at 122.4.
The index's annualized growth rate slowed to -5.7 percent after a -3.7 percent rate a week earlier.
(Reporting by Tom Ryan; Editing by Chizu Nomiyama)