Developing Android App | Should I set minSdkVersion to 10?

Developing Android App | Should I set minSdkVersion to 10?

Via http://developer.android.com/about/dashboards/index.html I still see
that API 10 (2.3.3) still has a large usage, and it would seem to be good
to support it; however, I do see that API 16+ (4.1+) are increasing in
usage pretty fast. It looks like it is doing so by reducing usage of API
10.
I have been wanting to see a chart that could have showed be the usage of
API 10 over the years and see the RATE at which it is being reduced by. I
have looked at Google's Cached version, but that only take me back a week.
I have looked at Wayback Machine's version
(http://web.archive.org/web/20130408124813/http://developer.android.com/about/dashboards/index.html),
but they don't contain the pictures anymore!!
I know that API 10 (basically all of Gingerbread) is being used less and
less, and I am just trying to figure out how long from now (based on
trajectories) when API 10 will be basically a real question if it should
be built for or not...right now it kind of is a necessity (33%).
Is it worth the time and money to implement API 10 if in 6 months (or 1
year) from now that percentage is only 5 - 10%??