Apple's share of the tablet market has been sliding for a while, but it's making a comeback... if not for the reasons the company might prefer. Strategy Analytics estimates that the iPad climbed from 19.1 percent of the market in the third quarter of 2015 to 19.9 percent a year later. However, that's mainly because the market as a whole shrank 10 percent. The analysts believe that many tablet manufacturers' shipments dropped year-to-year, and that Apple simply experienced a smaller decline than most. The one major exception is Amazon, whose $49 Fire tablet helped its shipments more than double.