okfn/opendatacensus — pull request #306 by wombleton (2014-02-26 05:54:54+00:00)
Title: Show previous years from `display_year`

![screen shot 2014-02-26 at 6 52 18 pm](https://f.cloud.github.com/assets/33471/2266993/49c257aa-9eaa-11e3-9578-f7f9e8eae320.png)