Well obviously drought has played an integral part in Oklahoma's past. Of course we had the 1930s drought, probably the most famous drought in the United States history. More of a high-plane drought for Oklahoma's sake, the 1950s drought was very important as well, statistically probably the worst drought in Oklahoma history. And then also we had the 19 teens drought. So we had those Decadal scale 10-year droughts occurring about every other decade. After that they stopped coming every 10 years or so and then they started coming in shorter bursts. So since the 1950s drought we've had shorter but very intense drought episodes. We had of course the 1995-96 drought, the 1998 drought, 2001-2002 drought, 2005-2006 drought, and then of course the current drought. So we've had very severe droughts that have caused you know a billion to two billion dollars in damage but they still pale in comparison to those previous droughts of our past mainly because they don't last nearly as long. You can imagine one of these short but severe droughts that we've had recently extend that out another 5, 6, 9, 10 years and then we start to see what those droughts of the 19 teens, 1930s and 1950s droughts would be like.