Index fund assets exploded from 6 million to 475 billion between 1971 and 1996

Evidence

Samsonite’s initial 6 million in 1971 grew to around 9 billion in U.S. index funds by 1980, 47 billion in 1985, 135 billion in 1988, and $475 billion in 1996. — Donald MacKenzie, An Engine, Not a Camera, 380