Need help in creating a Lorenzo Curve

I have all the info right, and it is curving like it is saposed to but there is extra space on either side of the information. Should i be doing this a different way? How can i fix this? Thanks so much!

**I DO have it in 2007 format so if you could explain how to fix it in 2007 that would be great!


Excell is obviously new to me =[