Display the crash counts by year

I'm not sure what you're expecting for the UI here, so it's pretty basic looking.

On a separate note, is there a way for the API to return key/value pairs?  I tried looking at the documentation for the CrashExtract data, but it was a bit confusing.  I ended up just making an API call and counting up until I saw that field 37 was the date, which felt a bit strange.