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

### Instruction:
What was the average year for a coin that had a mintage smaller than 10,000?

### Inputs:
table_name: table, columns: ['Year', 'Theme', 'Artist', 'Mintage', 'Issue Price', 'Special Notes']

### Response:
SELECT AVG Year FROM table WHERE Mintage < 10,000