The ability to specify an historical datapoint in a widget.

I'd like to put historical data from (now) - 365 days onto a BigNumber widget. The gist is be place that historical number alongside the current BigNumber Widget those same metrics. That can give me a context for those numbers in the long view. It would be nice to quickly see how we are performing relative to a year ago. I imagine a limitation is the number of datapoints that remain after that long (2/day I think), however on some devices it would be nice to have greater granularity and comparison.