user: Question: What was the highest share for the winners in 1959?
Columns: ['Year', 'Winner', 'Score', 'Runner(s)-up', "Winner's share ($)", 'Course', 'Location']
Types: ['real', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: [1967.0, 'Kathy Whitworth', '289 (–11)', 'Sandra Haynie', 1500.0, 'Pekin CC', 'Pekin, Illinois']
SQL:

assistant: SELECT MAX("Winner's share ($)") FROM "Table" WHERE "Year" = 1959.0;