makes the revenue graph slightly bigger

before: 

![image](https://cloud.githubusercontent.com/assets/4324656/3912930/4e7c66c2-2330-11e4-86ae-54a8d1152e3b.png)


after:

![image](https://cloud.githubusercontent.com/assets/4324656/3912936/535c8604-2330-11e4-8c38-8e5b88c7761f.png)