All of my inbox messages disappeared on 14 AUG 2013 and I did not delete them. Is there some way that my inbox messages can be restored?

I was using my hotmail account on 14 AUG 2013 and all of my inbox messages (19 of them) were automatically deleted for some reason.  I tried to restore deleted files but they were not there when I did this.  Outlook just took the messages away for some reason and I was saving those emails in my inbox.  Some of the messages were from back in 2005 and I was keeping them in my inbox.  Why would these messages just disappear from my inbox.  Is there any way that I can retrieve them?  I also use my hotmail account regularly so they were not deleted due to inactivity.  Please help me retrieve my 19 emails that I wanted to keep but Outlook automatically took them away.  Is there a current problem going on with Outlook and perhaps the messages will be restored at a later date?  Please help me if you can.