[franciscop]

2.13%, 2.19%, 2.26% is what worries me. They dropped dramatically in the same period of last year. From March, they are slowly creeping up.

[Rexxar]

I think the most important part of Petefine comment is "within the margin for error the sample". I would be surprised if the margin of error was inferior to 0.13%.

It's an Human bias to see patterns when there are only random events.