List the size of ALL mailboxes in 2013?

Hello,

I LOVED how exchange 2003 had the mailbox sizes as easy as a mouse click in the GUI.

I used a script in PS to list mailbox sizes in sorted order in Exchange 2007 and 2010 using get-mailboxstatistics.

It seems 2013 get-mailboxstatistics is only designed to look at 1 mailbox.

Can someone point to a command or script I can use in 2013 to get a list of all mailboxes on the server or in a database - preferably sorted by size?   (I do not want to have to type the name of each user into a script or on PS to get this info)

Thanks