80% is more than excellent, big congrats!!
I am not calculating too much, but I think that the post with the BTC piggy bank brought me some extra upvotes ;-)
How I am looking at it, as long as I do not spend outside money for my upvotes, I can keep on doing it and look at my results in a month or two. You need to remember, that in meantime, our SP grows from every upvoted post too ;-)