Apple Inc. (NASDAQ:AAPL) enjoyed an extraordinary year in 2014, as the stock price climbed more than 70% over the past year. The surging stock price has been driven by incredible sales of its newest iPhone, as the company sold over 74 million units last quarter. Apple made $18 billion in profit that quarter, more than any company had in corporate history.

With so much growth over the past year, investors understandably might believe that the company has saturated the smartphone market and does not have much room left to grow. They are wrong, however, as Apple

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