Frequencies for first 10,000 rows of priorterm variable in natl2013 dataset :

Prior Other |
Termination |
      s U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,327       63.27       63.27
          1 |      1,870       18.70       81.97
          2 |        797        7.97       89.94
          3 |        315        3.15       93.09
          4 |        113        1.13       94.22
          5 |         57        0.57       94.79
          6 |         27        0.27       95.06
          7 |          8        0.08       95.14
          8 |          5        0.05       95.19
          9 |          5        0.05       95.24
         10 |          3        0.03       95.27
         11 |          1        0.01       95.28
         12 |          2        0.02       95.30
         14 |          1        0.01       95.31
         15 |          1        0.01       95.32
         99 |        468        4.68      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015