Sidebar for page (problem with subpage listing)

The titles I have for subpages are quite long. So when you go to a page and see the listings in the sidebar, they look like this:

This Is The Title For
The First Subpage
And This Is The Title I
Am Using For The
Second Subpage

I can certainly go and change the line-height in the style.css but that does it universally… is there a way to add a line space between titles so that it looks like this instead?:

This Is The Title For
The First Subpage

And This Is The Title I
Am Using For The
Second Subpage