Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
WHAT IS THE AVERAGE DATE OF RELEASE FOR THICKSKIN?

### Inputs:
table_name: table, columns: ['Date of release', 'Title', 'Label', 'Oricon peak', 'RIAA cert.']

### Response:
SELECT AVG Date of release FROM table WHERE Title = thickskin