user: Question: How many stations in 2011-12 had volume of 11580 in 2008-09?
Columns: ['Station Name', '2002–03', '2004–05', '2005–06', '2006–07', '2007–08', '2008–09', '2009–10', '2010–11', '2011–12']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Devonport', 18795.0, 16202.0, 18573.0, 19655.0, 17450.0, 21652.0, 21674.0, 27006.0, 27756.0]
SQL:

assistant: SELECT COUNT("2011–12") FROM "Table" WHERE "2008–09" = 11580.0;