x=1.000 u=0.0: ('stall', np.float64(200000.0))
      sustained-recession threshold x = 1.0000
x=1.000 u=0.02: ('in', np.float64(54.660424235822816))
      sustained-recession threshold x = 1.0001
x=1.000 u=0.05: ('in', np.float64(33.450946183575525))
      sustained-recession threshold x = 1.0008
x=1.000 u=0.1: ('in', np.float64(18.426540477336985))
      sustained-recession threshold x = 1.0031
