CREATE TABLE table_203_102 (id DECIMAL, "event" TEXT, "performance" TEXT, "athlete" TEXT, "nation" TEXT, "place" TEXT, "date" TEXT)

in 2008 in track and field events how many world records did usain bolt break ?
SELECT COUNT(*) FROM table_203_102 WHERE "athlete" = 'usain bolt'
SELECT COUNT(*) FROM "table_203_102" WHERE "athlete" = 'usain bolt'