When the overwhelming majority of your state's economy is based upon agriculture, oil and private aircraft, and all three industries go into the shitter, your going to have a tough time making up that economic output.
The "tax experiment" has had no measurable impact upon the state other than enraging $40k p/yr hayseeds who don't realize they're paying $800 per year less in income taxes, and wasting newspaper print on the de minimis monthly budget deficits (but not de minimis surpluses).