improve the readability of my graph

Hi, I have 2 excel charts right on the front page of my site.
The issue is that I added the Data Labels to show the daily account balance, but with more and more days, the numbers get mixed with each other.

On the scale there was an option to increase the interval to 2, so not ever day is shown.

Can I do that somehow with Data Labels or is there anything else you can suggest to me to improve the visibility and readability of this graph taking into account that it is going to continue for many days.

Many thanks.
the URL is: http://buxto-xorovatz.blogspot.com/