You can see your last 10 years of donor retention in a single graph.  Click the image below to see a Youtube video of how to get your own donor retention dashboard.  An explanation of the calculation can be found here: http://goo.gl/yqAQ4B

The chart can be configured for ANY rolling 10 year history (assuming you have 10 years of donor history).  You also have the option to exclude inkind-only donors from the calculation.