Hubba, hubba!Mac sales stabilize in Q4 amid worldwide PC shipment decline: "According to the latest estimates from Gartner, Apple shipped 5.4 million Macs to capture 7.5 percent of the worldwide PC market in the fourth calendar quarter of 2016, up 2.4 percent from 5.3 million units shipped and a 7 percent share of the market during the same period a year ago. "