I thought this would give some idea about when your application has been received by BEC for everyone.
Backlogged Application Receipt Dates
The document found at the link below was created to help employers who have applied for Permanent Foreign Labor Certification prior to March 28, 2005 find out when their applications arrived at a backlog processing center. In order to learn when a specific case was received by a backlog center, first locate the state where the Permanent Foreign Labor Certification application was submitted. Then, in the next column, marked Filing Date Range, find the dates between which the application's filing (or priority) date falls. To the right of this column is the Date Received column, which shows the exact date that applications within a specific priority date range arrived at the backlog center. The last column, entitled Backlog Center, shows what center received that particular shipment.
http://workforcesecurity.doleta.gov/foreign/docs/online_manifest.xls