user: Question: What was the literacy rate published in the 2001 census for the state that saw a 12.66% increase?
Columns: ['State', 'Literacy Rate (%) - [2013 Estimate]', 'Literacy Rate (%) - 2001 Census', 'Literacy Rate (%) - 2011 Census', '% Increase']
Types: ['text', 'real', 'real', 'real', 'text']
Sample row: ['Kerala', 95.5, 92.19, 93.91, '3.04%']
SQL:

assistant: SELECT "Literacy Rate (%) - 2001 Census" FROM "Table" WHERE "% Increase" = '12.66%';