I am trying to find trees per acre, regarding the Amazon, Congo, and Australian Rainforests. I need trees per acre for today, ten years ago, and twenty years ago, and I need a credible source. I have scoured the internet and can find rate of deforestation for all three, and the number of trees in the Amazon Rainforest in 2013. However, I am having trouble with the rest. Any help would be excellent. Even a point in the direction of a source.