(Adds detail on December sales forecast)
Jan 5 (Reuters) - The International Council of Shopping Centers and Goldman Sachs on Tuesday released the following seasonally adjusted weekly data on U.S. chain store retail sales. WEEK ENDING INDEX 1977=100 YEAR/YEAR CHANGE WEEKLY CHANGE
(percent) (percent) Jan 2 497.6 2.5 1.5 Dec 26 490.1 2.3 0.4 Dec 19 488.1 0.4 0.6 Dec 12 485.1 2.4 0.4
ICSC Research estimates same-store sales for December rose about 2.5 percent. This was an upward revision from ICSC's prediction in recent weeks for an increase of two percent.
The ICSC weekly U.S. retail chain store sales index is a joint publication between ICSC and Goldman Sachs Group Inc. It measures nominal same-store sales, excluding restaurant and vehicle demand, and represents about 75 retail chain stores.