Dr. Martens, which was acquired last year by Permira, posted a 30 percent increase in revenues to £209 million (€263.38m-$341.05m) for the financial year ended last March 31. Net earnings grew by 33 percent to £33.9 million (€42.72m-$55.33). The number of Dr. Martens stores around the world went up from 13 to 41 in the course of the year.