This year, the giant panda was reclassified as "vulnerable" from its long held "endangered" status, because the wild population became high enough. Currently there are about 2500 pandas living globally. The population needs to reach 10,000 to be reclassified as "near threatened." The recent reclassification was made possible by the 17% population increase per decade. How long will it take for the population to grow to that amount if the rate stays the same?