CREATE TABLE table_204_613 (id DECIMAL, "title" TEXT, "year" DECIMAL, "peak chart positions\ us" DECIMAL, "peak chart positions\ us\ r&b" DECIMAL, "peak chart positions\ us\ rap" DECIMAL, "album" TEXT)

how many singles were released in 2011 ?
SELECT COUNT("title") FROM table_204_613 WHERE "year" = 2011
SELECT COUNT("title") FROM "table_204_613" WHERE "year" = 2011