It handled about 19.9 million shipments on Dec. 17, 2012.FedEx predicts that shipments in the first week of December will rise 13 percent over last year's peak week, to more than 85 million shipments, driven by online shopping and retailers stocking up on electronics, apparel and other goods.it is basing the forecasts partly on estimates by the National Retail Federation, a trade group, and researc