CREATE TABLE table_18004 ("Year" FLOAT, "Dates" TEXT, "Champion" TEXT, "Score" FLOAT, "To par" TEXT, "Margin of victory" TEXT, "Purse  (  $  ) " FLOAT, "Winners share  ( $ ) " FLOAT)

What year is Jiyai Shin the champion?
SELECT COUNT("Year") FROM table_18004 WHERE "Champion" = 'Jiyai Shin'
SELECT COUNT("Year") FROM "table_18004" WHERE "Champion" = 'Jiyai Shin'