Currently I have a table that looks like this:
[![Currently I have a table that looks like this](https://i.stack.imgur.com/nVZnM.png)](https://i.stack.imgur.com/nVZnM.png)

I'm trying to give each month in the year column a year value (e.g. September = 09-2011, December = 12-2011, March = 03-2012 etc.) I'm completely stumped on how to do this as i'm new to working with pandas. Does anyone have any pointers on how to manage this using pandas?