If you are looking for a fair valuation then I would use a P/E of 20 all around. You can use 20 now and in the following years (instead of 50) because there is some risk with Chinese companies and OTC. And you can use 20 in 2016 and beyond because the growth rate will come down to that level (20%) at some point.
So this would be a fair value for the stock in
2013 20 x 1,05 = $21 2014 20 x 1,55 = $31 2015 20 x 2,33 = $47 2016 20 x 3,26 = $65 2017 20 x 4,24 = $85
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