Which fruit has the highest percentage of protein?

Avocado - 4 g of protein

Kiwi (1 cup) - 1.75 g

Banana - 1 g

Blackberries (1 cup)- 1 g

Grapes (1 cup) - 1 g

mango - 1g

orange - 1g

watermelon (1 slice) - 1g

tomato - 1 g