user: Question: How many deciles have Years of 9–13?
Columns: ['Name', 'Years', 'Gender', 'Area', 'Authority', 'Decile', 'Roll']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Broadfield School', '1–8', 'Coed', 'Selwyn', 'State', 10.0, 115.0]
SQL:

assistant: SELECT COUNT("Decile") FROM "Table" WHERE "Years" = '9–13';