While I believe that 80% figure, and the second graph from this NYT article: http://www.nytimes.com/2015/01/11/travel/where-will-americans-travel-in-2015-.html?_r=0 seems to confirm that, there are some notable countries missing that I hope are some of the ones targeted for inclusion by the end of the year. Even if they don't match T-Mobile's impressive list of countries, getting France, Italy, China & Hong Kong, Taiwan, Singapore, India, the Bahamas and Caribbean countries, Australia and New Zealand would be huge for business travelers and vacationers.