In June, Berg Insight said the number of mobile location-based service users in Europe would increase by a compound annual growth rate of nearly 37% to hit 130 million users in 2014. They’ve now revisited the subject with a new report that says the number of mobile navigation users worldwide doubled year-on-year in the first half of this year to 28 million people. Berg Insight now forecasts a compound annual growth rate of 33.7% to reach 160 million mobile navigation users worldwide by 2015. [Press release]