Birthright 14
Blackmoor 22
Council of Wyrms 14
Dark Sun 26
Dragonlance 13
Eberron 25 - Still has no droids, steampunk, or any of the other sci-fi nonsense people for some reason still seem to believe Eberron has. If you're going to accuse it of genre-bending, at least get genres right; in this case film noir and pulp action.
Ghostwalk 8
Greyhawk 31
Jakandor 19
Kingdoms of Kalamar 19
Lankhmar 26
Mahasarpa 17
Mystara 27
Pelinore 10
Planescape 14
Ravenloft 11
Spelljammer 22
Wilderlands of High Fantasy 16 There were aliens.