| Country | Electricity generated from renewable sources (%) |
|---|---|
| Austria | 78.2 |
| Denmark | 67.5 |
| Portugal | 59.1 |
| Spain | 42.8 |
| Germany | 44.0 |
| Greece | 41.3 |
| France | 24.3 |
| Poland | 16.8 |
Using the data above, calculate the mean percentage of electricity generated from renewable sources.
You must show your working. Give your answer to one decimal place.