I want to know the answer to the following question:
In what year did Notre Dame create the Office of Sustainability?
All the background I'm provided with is that "The University of Notre Dame has made being a sustainability leader an integral part of its mission, creating the Office of Sustainability in 2008 to achieve a number of goals in the areas of power generation, design and construction, waste reduction, procurement, food services, transportation, and water.". Is that enough to answer the question?