The bar chart shows the percentage of electricity generated from four sources in one country in 2000, 2010 and 2020. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
| Coal | Gas | Nuclear | Renewables | |
|---|---|---|---|---|
| 2000 | 52 | 28 | 15 | 5 |
| 2010 | 38 | 34 | 16 | 12 |
| 2020 | 14 | 36 | 15 | 35 |
Units: % of electricity. Data invented for practice.
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