NEW YORK — The International Council of Shopping Centers reported Tuesday that April same-store sales are poised to show the biggest year-over-year gain in two years — despite recently intensified worries over higher gas prices.

ICSC chief economist and director of research, Michael P. Niemira, predicted in a report that April comparable-store sales should rise between 6 and 6.5 percent. That would be the highest increase since the ICSC reported in March 2004 an average monthly comp increase of 7 percent. Most major retailers will report comps on Thursday.

“Like the Energizer Bunny, the consumer continues to keep on spending despite rising concerns on the energy front,” Niemira said.

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