Article: The Hanover Zoo is one of the most spectacular and best zoos in Europe. The zoo received the Park Scout Award for the fourth year running in 2009/10, placing it among the best zoos in Germany. The zoo consists of several theme areas: Sambesi, Meyers Farm, Gorilla-Mountain, Jungle-Palace, and Mullewapp. Some smaller areas are Australia, the wooded area for wolves, and the so-called swimming area with many seabirds. There is also a tropical house, a jungle house, and a show arena. The new Canadian-themed area, Yukon Bay, opened in 2010. In 2010 the Hanover Zoo had over 1.6 million visitors.

Question: When did the Canadian-theme area in the Hanover Zoo open?
2010