Frequencies for first 10,000 rows of prov1240 variable in pos1994 dataset :

   subunits |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,973       99.73       99.73
          1 |         12        0.12       99.85
          2 |          5        0.05       99.90
          3 |          4        0.04       99.94
          4 |          1        0.01       99.95
          5 |          1        0.01       99.96
          6 |          1        0.01       99.97
          8 |          1        0.01       99.98
         62 |          1        0.01       99.99
         74 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 May 2017