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

### Instruction:
What is the highest extra total before 2003 at the Meeting of all africa games?

### Inputs:
table_name: table, columns: ['Year', 'Meeting', 'Venue', 'Result', 'Event', 'Extra']

### Response:
SELECT MAX Extra FROM table WHERE Meeting = all africa games AND Year < 2003