What I think is all the charts are appropriate, but using the pie chart to compare with the line graph, I would think that the pie chart is not appropriate.

Firstly,

using the angles you can find the number of places provided you have the total numbers of places. You can use the number divide it by 360 degree then multiply by the wanted degrees.

Secondly,

the chart is supposed to show the statistics over a period of time. But in this pie chart you cannot see the desired period of time frame.

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