user: Question: What is the lowest average finish having top 5s of 0?
Columns: ['Year', 'Races', 'Wins', 'Top 5', 'Top 10', 'Poles', 'Avg. Start', 'Avg. Finish', 'Season Rank']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: ['1999', 1.0, 0.0, 0.0, 0.0, 0.0, 16.0, 11.0, '64th']
SQL:

assistant: SELECT MIN("Avg. Finish") FROM "Table" WHERE "Top 5" < 0.0;