Weekly Initial Unemployment Claims

I didn't see anyone make a big deal about it, but this week the 4-week moving average of weekly initial unemployment claims decreased to the lowest level in over 40 years.  (The graph at Calculated Risk doesn't quite show the level clearing the low that was set in early 2001, but the number is lower.)  I'm not sure this tells us much that we don't already know from the other unemployment statistics, but it's still pretty remarkable, especially given how much the population and workforce have grown since the 1970s.