Some ten seats were created in 1978, during the Carter administration.  (This is why Carter, who had only a single term, appointed 15 judges while Reagan only appointed 10 in his two terms.) Many of Carter's appointees then left office during the Clinton administration. (Note that this may not necessarily indicate intent on the Carter judges' part: the judges seem to have left the bench after about 18 years on average, and 18 years is a decent run for a federal judge.)

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