pivot table sorting

[biglb79]

I have data by month January-June and each week is labeled week 1 through week 26. I want the weeks on the row side and months on columns, but every time I sort it the pivot table does week 1, week 10, week 11, week 2, week 21, week 3, etc... how do I have it go week 1, week 2, week 3, etc?

 

[sandy666]

in source of data set week 01, week 02 etc