It's been a fifa 15 coins monster year for Sirius XM Radio(Nasdaq: SIRI) and its investors, but what will the year bring? Let's dive into the four questions whose answers will ultimately dictate the stock's direction come 11. The satellite radio giant ended a rocky 2009 on the cautiously optimistic note. SiriusXM closed the actual year with 18.5 million subscribers, and CEO Mel Karmazin was publicly targeting 500,000 net additions in 2010. SiriusXM hit 19 million subscribers as Karmazin projected, but then kept going.