LM2674: Minimum current load for switching regulator

I am trying to find out if the LM2674-5.0 has a minimum load requirement to maintain regulation.  The spec sheet shows the output voltage for:  V IN = 8 V to 40 V, I LOAD = 20 mA to 500 mA, which seems to imply a minimum load of 20 mA.

Thank you!