CREATE TABLE table_55824 ("Year" FLOAT, "Championship" TEXT, "54 holes" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

How many years had 54 holes and a 2 shot lead?
SELECT COUNT("Year") FROM table_55824 WHERE "54 holes" = '2 shot lead'
SELECT COUNT("Year") FROM "table_55824" WHERE "54 holes" = '2 shot lead'