Whether your choice of small talk is either the weather or the economy, your opening line should be the same: It’s hot.Clark County stockpiled another 900 jobs in April, according to the latest report from the state Employment Security Department. And unemployment rates fell by another half a percentage point, to 5 percent, the lowest since September 2000.Regional economist Scott Bailey said the unemployment rate isn’t a perfect ruler to measure economic health, however. The participation rate in the economy was better in 2000, he said.“The unemployment rate continues to be not a straightforward comparison because of the lower labor force participation rate, with people who dropped out of the labor market and still haven’t fully come back,” Bailey said.The Tuesday report documents shifts in employment across sectors and compares those changes with the previous month and April 2016. The growth by 900 jobs doesn’t account for seasonal jobs, like the extra cashiers hired by stores during the holidays.Without making those seasonal adjustments, Clark County added 1,300 jobs. Government jobs grew by 400 positions since March, the report said. The leisure and trade sectors both added 300 jobs. None of the sectors showed a decline in jobs, though construction went flat.