Grouping items with unified title

Guys,

When trying to create a grouped PDF like the following:

** January 2014 **
Post 1
Post 2
Post 3

** February 2014 **
Post 4
Post 5

It displays like this when creating a view and grouping the field. When trying to output the PDF it displays like:

January 2014
Post 1
January 2014
Post 2
January 2014
Post 3
etc.

Is there a way to make the PDF display like the first example?

Thanks