Attached is a plot of the NPRO output power and the output power of the two pump diodes for the past 4 years.
One can see that the diode current was increased around 8/16/2013 and 6/5/2014.  The first increase in pump
current was about 200 mA; the second about 50 mA.

This NPRO is very close to its "maximum" diode current.