Size of third age Armies

[R.R.J Tolkien]

Just read an amazing thread on the subject on another Tolkien forum

Armies of Middle Earth
http://www.thetolkienforum.com/index.php?threads/armies-of-middle-earth.4431/#IgdxCksJSxY5VEEp.99


and wanted to see if anyone here had information regarding population sizes for the nations of middle earth, or estimates on the size of the armies during the third age.

Thanks.