Help With Clustered Column Chart Display

When creating a "clustered column chart", is there any way I can widen how much the data columns use of the x-axis?  Either widening how much of the X Axis is used, or adding space between data pints.  Right now, I have about 12 data point columns, but they're all clustered in the middle of the x-axis (and hard to see).  The screenshot below is maximized and the real chart will be much smaller.  I have all this extra space to the left and right of the columns I'd like to utilize (see screenshot).  Thanks!