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

### Instruction:
What is the average Year for the Royal Canadian Mint Engravers Artist when the Mintage is under 200?

### Inputs:
table_name: table, columns: ['Year', 'Artist', 'Composition', 'Mintage', 'Issue Price']

### Response:
SELECT AVG Year FROM table WHERE Artist = royal canadian mint engravers AND Mintage < 200