Hi ioi,
Well I think the new design is a good improvement, though there's definitely some tweaks that you could make.
Actually i'm webdesigner so if you want i could try and make a design and send you.
By the way, something not about design but i think it would make the site much more credible : I think it would be possible to make a sort of color code or something to indicate the fiability of each number. I mean, when you get more sources, you tweak your numbers.
We should be able to know easily if a number is a first estimation, or if it has been compared with many sources and can be considered as reliable.