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

### Instruction:
Name the average Top 5 which has a Position of 52nd with a Year smaller than 2000?

### Inputs:
table_name: table, columns: ['Year', 'Starts', 'Wins', 'Top 5', 'Top 10', 'Poles', 'Avg. Start', 'Avg. Finish', 'Winnings', 'Position', 'Team(s)']

### Response:
SELECT AVG Top 5 FROM table WHERE Position = 52nd AND Year < 2000