user: Question: What is the highest Year, when Apparatus is "vault", and when Rank-Final is less than 9?
Columns: ['Year', 'Competition Description', 'Location', 'Apparatus', 'Rank-Final']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [2008.0, 'U.S. Championships', 'Boston', 'Floor Exercise', 3.0]
SQL:

assistant: SELECT MAX("Year") FROM "Table" WHERE "Apparatus" = 'vault' AND "Rank-Final" < 9.0;