Frequencies for first 10,000 rows of priorterm variable in natl2012 dataset :

Prior Other |
Termination |
      s U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,859       68.59       68.59
          1 |      1,882       18.82       87.41
          2 |        686        6.86       94.27
          3 |        251        2.51       96.78
          4 |        104        1.04       97.82
          5 |         30        0.30       98.12
          6 |         19        0.19       98.31
          7 |          7        0.07       98.38
          8 |          4        0.04       98.42
          9 |          1        0.01       98.43
         10 |          3        0.03       98.46
         12 |          3        0.03       98.49
         13 |          1        0.01       98.50
         14 |          1        0.01       98.51
         99 |        149        1.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 5 May 2016