I want to know the answer to the following question:
By the end of 2006, what percentage of Portugal's energy production was from renewable sources?
All the background I'm provided with is that "By the end of 2006, 66% of the country's electrical production was from coal and fuel power plants, while 29% were derived from hydroelectric dams, and 6% by wind energy.". Is that enough to answer the question?
Answer: yes