CREATE TABLE table_name_64 (year INT, album VARCHAR, us_hot_100 VARCHAR)

Which Year has an Album of airwaves, and a US Hot 100 of ?
SELECT MAX(year) FROM table_name_64 WHERE album = "airwaves" AND us_hot_100 = "–"
SELECT MAX("year") FROM "table_name_64" WHERE "airwaves" = "album" AND "us_hot_100" = "–"