Python Sorted() returning list half sorted

Question

I am given a dictionary that looks something like this

sizeandstock = {
 \'10.5\': 132,
 \'11.0\': 66,
 \'8.5\': 80,
 \'6.5\': 10,
 \'6.0\': 31,
 \'4.5\': 36,