Frequencies for first 10,000 rows of priorterm variable in natlterr2005 dataset :

Prior Other |
Termination |
      s U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,543       85.43       85.43
          1 |      1,072       10.72       96.15
          2 |        256        2.56       98.71
          3 |         61        0.61       99.32
          4 |         15        0.15       99.47
          5 |          6        0.06       99.53
          6 |          5        0.05       99.58
          7 |          2        0.02       99.60
         11 |          1        0.01       99.61
         12 |          1        0.01       99.62
         20 |          3        0.03       99.65
         99 |         35        0.35      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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