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

### Instruction:
What is the sum of the years with bus conner as the BSU head coach?

### Inputs:
table_name: table, columns: ['Year', 'Round', 'Opponent', 'Result', 'BSU Head Coach']

### Response:
SELECT SUM Year FROM table WHERE BSU Head Coach = bus conner