user: Question: How much are all winners share ($) in the year 2004?
Columns: ['Year', 'Dates', 'Champion', 'Country', 'Score', 'Tournament location', 'Purse ($)', 'Winners share ($)']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['2013', 'Jul 12–14', 'Wei-Ling Hsu', 'Taiwan', '202 (–11)', 'Capital Hills at Albany', 100000.0, 15000.0]
SQL:

assistant: SELECT SUM("Winners share ($)") FROM "Table" WHERE "Year" = '2004';