A record 141 million people were expected to shop in stores and online over the four-day Thanksgiving weekend that ended Sunday, up from last year’s 137 million, according to the results of a survey of nearly 4,500 shoppers conducted for The National Retail Federation.This encompassed both Black Friday and Gray Thursday, the day before the traditional start of the holiday shopping season. By some accounts, Thursday is the new Friday.But total spending fell for the first time ever since the trade group began tracking it in 2006, according to the survey that was released on Sunday. Over the four days, spending fell an estimated 2.9 percent to $57.4 billion.Shoppers, on average, spent an average of $407.02 during the four days, down 3.9 percent from last year.