The data in your spreadsheet will need to be reshaped using the Tableau Add-In:
After that, your field labels should be in one column (rename to "MNTH"). At this point you can use Tableau.
Create a calculated dimensions:
Assuming your data numbers will be in one column (rename to "AMT"). Your calculated measure will look something like:
2) if datepart('year',DATEADD('month',-[Parse],today())) = datepart('year',today()) then [AMT] else null end
I attached the sample workbook for you to review.
Parse Numbers.twbx.zip 88.3 KB