Besides bodies and homemade nooses, the area is littered with signs displaying such uplifting messages like "Life is a precious thing! Please reconsider!" or "Think of your family!"
"If you commit suicide here, bears will poop on your corpse."
In the 70s, the problem got national attention and the Japanese government began doing annual sweeps of the forest in search of bodies. In 2002, they found 78. But who knows how many they missed? In all likelihood there probably is a hanged person somewhere in Aokigahara on any given day. You can see some of them here. WARNING, NSFS (Not Safe For Soul).
By the way, if an entire dark forest full of hanged corpses wasn't bad enough, a few years ago some people noticed that a lot of the dead in Aokigahara probably had cash or jewelry on them. Thus began the proud Japanese tradition of Aokigahara Scavenging where people are running around the Death Forest, looking for dead guys to loot.