So this is Darrel. I'll start a little bit on that, and we've got Tim Tatum, who heads up our regulatory group this year, also with us. But first of all, let me, we look at this all the time. This is something that we constantly assess, and I said in my comments we look at a number of factors, what's going on with growth, number one, and as I said, we've had strong growth over the last number of years, which has been one of the key drivers right now as to why we don't feel the need to go in and have to file. We've also done a really good job of managing our expenses. We're on our, Steve talked about where our expenses were for 2018. The biggest part of that increase is associated with some variable labor costs that we don't expect to reoccur in 2019. And so if you look over the last 7 years from an expense perspective after adjusting for that, it's relatively flat. And so, and the other part of this is as we continue to manage our capital program, again we spend what we need to spend on and ensure that for a reliable and safe system and also in order to continue to meet our growth. So we look at all of those factors in totality and determine whether or not it makes sense to have to go in and file. And so as we said, we're not planning to do it for the next 12 months, but it's, and so we will continue to assess that, we will update you all on that at the end of the first quarter depending on and take a look at the landscape there. The other thing you have to, you can't lose sight of, too, though is the fact that, over the last couple of years, we've done some one-off regulatory filings where it had one off issues for instance in the Valmy settlement case. We did a one-off case there to address a specific issue and that has provided some recovery of cost and return in those cases. And so we sort of picked those one-off things where we can, and then we look at it holistically beyond that. So, I can't tell you right now. When that next one is going to be? But we will, we would be inclined, when we have the next call, we would update what I just told you now. And the fact that we are doing it, we're not planning one for the next 12 months. And Tim, if you had anything to add.