This is slightly old information, but it’s newsworthy. In April, according to the state Labor Department, employment in South Dakota reached 430,090. That is the high mark in South Dakota history. Also in April, the unemployment rate dipped to 4.1 percent. That is the lowest rate in more than four years. Not since December 2008, when the unemployment rate was 3.7 percent, has it been lower. The worst in recent times was the 5.4 percent of January 2010. Will this summer mark a return to below 4.0 percent?