compare two actual months

I have this list here

2014 2015
Jan 3.253 3.378
Feb 3.248 3.362
Mar 3.260
Apr 3.304
May 3.327
Jun 3.321
Jul 3.306
Aug 3.265
Sep 3.307
Oct 3.384
Nov 3.440
Dec 3.369

And I have one more field with actual month.

I want Chart to compare the months 2014 and 2015 from actual month.

Thank you