How many movies have Hayao Miyazaki and Yoko Sakurai collaborated on?

They have worked on 1 movie together! Their first movie together was Sherlock Hound: The Adventure of the Blue Carbuncle / Treasure Under the Sea (1984) and was their highest rated movie together. They have not worked together since Sherlock Hound: The Adventure of the Blue Carbuncle / Treasure Under the Sea (1984).