It shouldn't come as much of a surprise that more Americans than ever now own tablets, but if you'd ever wanted some quantifiable data to go along with that homespun wisdom, then the Pew Research Center is glad to help. According to its latest report, 22 percent of US adults now own a tablet of some form. While the iPad remains the dominant player in the space with a 52 percent market share, this figure starkly contrasts the 81 percent share that Pew reported in 2011. As you migh