Android version adoption stats

Google publishes Android version adoption information at this location https://developer.android.com/about/dashboards/index.html.

Stats as of October 2014:

 

Version Codename API Distribution
2.2 Froyo 8 0.7%
2.3.3 –
2.3.7
Gingerbread 10 11.4%
4.0.3 –
4.0.4
Ice Cream Sandwich 15 9.6%
4.1.x Jelly Bean 16 25.1%
4.2.x 17 20.7%
4.3 18 8.0%
4.4 KitKat 19 24.5%