Look at a perfmon counter set which was started at the beginning of the week. If you didn't start one a week ago and don't have a third party tool recording those stats then you won't be able to.
If you want to track stuff like that, you need to put something in place to monitor it.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability
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