[This is similar in nature to Adrian's question/bulletin How can we encourage more voting? Only more focused on voting on answers.]
I've been on a personal quest to get this site's percentage of questions answered into the 90th percentile. When I started 3 days ago, we were at 86.3% or so and as the time of writing this we are at 87.4%.
If you don't know, the percentage (P) is calculated using the number of questions (Q) displayed here and the number of answers without an upvote (A) displayed here (note: this is not even about the Asker marking an answer as correct).
(Q - A) / Q = P
So, to increase the percentage, we just need to answer questions and upvote GOOD answers. That requires, at minimum, two users involved since you can't upvote your own answers.
You don't need to share my current obsession on this, but I'm wondering how we can encourage other experienced users (like these folks and these too) to answer and upvote?
From Area 51