Drop chances

ItemStage 10Stage 50Stage 100Avg count
Paper24%24%24%0.6
Scrap Polymers24%24%24%0.6
Iron20%20%20%0.5
Cloth Fragment16%16%16%0.4
Empty Water Jar10%10%10%0.1
Bone3.5%3.5%3.5%0.07
Murky Water3.3%3.3%3.3%0.03
Rotting Flesh2.7%2.7%2.7%0.05
Cornmeal2.4%2.4%2.4%0.03
Old Sham Sandwich2.3%2.3%2.3%0.02
Water2.1%2.1%2.1%0.02
Potato2.0%2.0%2.0%0.03
Ear of Corn1.9%1.9%1.9%0.03
Yucca Fruit1.0%1.0%1.0%0.02
Chicken Ration0.53%0.53%0.53%0.01
Can of Pears0.50%0.50%0.50%0.01
Can of Miso0.49%0.49%0.49%0
Pure Mineral Water0.49%0.49%0.49%0
Chicken Soup0.49%0.49%0.49%0
Charred Meat0.48%0.48%0.48%0
Can of Cat Food0.47%0.47%0.47%0
Animal Fat0.34%0.34%0.34%0.01
Blueberries0.32%0.32%0.32%0.01
Pumpkin0.27%0.27%0.27%0

Average count per open at loot stage 50. From 40,000 simulated opens per stage; perks that raise loot are not counted.