Total size on disk of your Dota 2 on steam?

[Paradox]

until this The International 2015 and many major updates, AND the Dota 2 Reborn mega update with (7.1GB + 5.5GB), now, how is your disk?
my Steam folder now eat 50GB+ total for only Dota 2 games (with Dota 2 Reborn + Workshop content), no other games, it surprise me! WOW!
so, how about you, guys? already check it out? :)

[99`Respawns]

39gb dota reborn + dota test

[tom]

40 gb dota + dota reborn + workshop tool + some mod
and other than this i have the dota test folder wich isn't sticked in "dota 2 beta"

[KnightWumar]

mine is 12GB before I updated in 2015 and ofc without reborn, so does that mean that updates keep the old files too ?
also is it better for me to delete dota 2 and redownload and istall it all over again ?