Frequencies for first 10,000 rows of priorterm variable in natl2010 dataset :

Prior Other |
Termination |
      s U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,261       72.61       72.61
          1 |      1,676       16.76       89.37
          2 |        609        6.09       95.46
          3 |        212        2.12       97.58
          4 |         66        0.66       98.24
          5 |         41        0.41       98.65
          6 |         15        0.15       98.80
          7 |          8        0.08       98.88
          8 |          6        0.06       98.94
          9 |          3        0.03       98.97
         10 |          1        0.01       98.98
         13 |          2        0.02       99.00
         14 |          1        0.01       99.01
         99 |         99        0.99      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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