"continent","1952","1957"
"Africa",1252.57246582115,1385.23606225577
"Americas",4079.0625522,4616.04373316
"Asia",5195.48400403939,4003.13293994242
"Europe",5661.05743476,6963.01281593333
"Oceania",10298.08565,11598.522455