请教怎样看2007-09 PERM cases data 来估算等待期？

I have downloaded all PERM cases data from foreign labor cetification's offical wesite from the link below：

http://www.flcdatacenter.com/CasePerm.aspx

And I found out all China born cases include EB2,3 from 2007-2009 under status of certified, withdrawn or denied as follow:

2007-7388 cases

2008-2515 cases

2009-3786 cases

Please help to tell me how many of them are EB2 or EB3 so I can estimate the waitting time, Also, my case was certified or approved but I can not find my case number there, which means the data is also incomplete itself.  Appreciate.