A Scottrade survey asked adults how much money they have saved for retirement. The data are as follows:

How Much                                         Percentage

Less than $ 25,000 …………………..            39

$ 25,001 to $ 100,000 ………………             14

$ 100,001 to $ 250,000 ………………            9

$ 250,001 to $ 500,000 ………………            7

More than $ 500,000 ………………..              7

Not sure ………………………………          24

Construct a display that best describes these data.