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

### Instruction:
Which Year saw the Production of Wicked at the Helpmann Awards Award ceremony?

### Inputs:
table_name: table, columns: ['Year', 'Award ceremony', 'Role', 'Production', 'Result']

### Response:
SELECT Year FROM table WHERE Production = wicked AND Award ceremony = helpmann awards