user: Question: What's the highest level of team astana since 2007?
Columns: ['Season', 'Team', 'Country', 'League', 'Level', 'Apps', 'Goals']
Types: ['real', 'text', 'text', 'text', 'real', 'real', 'real']
Sample row: [2005.0, 'Temirzholshy Almaty', 'Kazakhstan', 'First Division', 2.0, 20.0, 4.0]
SQL:

assistant: SELECT MAX("Level") FROM "Table" WHERE "Team" = 'astana' AND "Season" > 2007.0;