user: Question: How many total wins with the latest win at the 1999 italian grand prix at a rank of 15?
Columns: ['Rank', 'Engine', 'Wins', 'First win', 'Latest win']
Types: ['real', 'text', 'real', 'text', 'text']
Sample row: [1.0, 'Ferrari', 222.0, '1951 British Grand Prix', '2013 Spanish Grand Prix']
SQL:

assistant: SELECT SUM("Wins") FROM "Table" WHERE "Latest win" = '1999 italian grand prix' AND "Rank" > 15.0;