CREATE TABLE table_74624 ("Year" FLOAT, "Player" TEXT, "Nation of citizenship" TEXT, "Team represented" TEXT, "Position primarily played" TEXT)

What is the sum of all the years that Landon Donovan won the ESPY award?
SELECT COUNT("Year") FROM table_74624 WHERE "Player" = 'landon donovan'
SELECT COUNT("Year") FROM "table_74624" WHERE "Player" = 'landon donovan'