I want to know the answer to the following question:
What percentage did independent companies' energy production increase between 2009 and 2010?
All the background I'm provided with is that "Between 2009 and 2010, independent companies' energy production increased by 56%, from 2,709 Gigawatt hour in 2009 to 4,232 GWh in 2010.". Is that enough to answer the question?