You are not looking at the right numbers; the issue is "Net Investment Income", $60.6M vs dividends paid, $63.5M. In other words, they are paying out more than they are taking in, and that is not sustainable. I sold long ago but am hanging on to NCV.
Your math is a little off. It's been paying .085 since Feb 09, which is just about the time I bought in. I'm a bit concerned the earnings have dropped a bit but have faith they'll do what they need to in order to keep the div where it's at.