Please answer a question about the following article about Plymouth:

The city's main theatres are the Theatre Royal (1,315 capacity), its Drum Theatre (200 capacity), and its production and creative learning centre, The TR2. The Plymouth Pavilions has multiple uses for the city staging music concerts, basketball matches and stand-up comedy. There are also three cinemas: Reel Cinema at Derrys Cross, Plymouth Arts Centre at Looe Street and a Vue cinema at the Barbican Leisure Park. The Plymouth City Museum and Art Gallery is operated by Plymouth City Council allowing free admission – it has six galleries. The Plymouth Athenaeum, which includes a local interest library, is a society dedicated to the promotion of learning in the fields of science, technology, literature and art. From 1961 to 2009 it also housed a theatre.

When did the theater in the Plymouth Athenaeum close?
2009