Frequencies for first 10,000 rows of pos_common variable in pos1988 dataset :

       POS Common ** -No |
              Desription |      Freq.     Percent        Cum.
-------------------------+-----------------------------------
                         |        146        1.46        1.46
                      00 |      9,600       96.00       97.46
00          000000000000 |         14        0.14       97.60
00          007503000100 |          1        0.01       97.61
00          010000000000 |          1        0.01       97.62
            000000000000 |          1        0.01       97.63
                    8 00 |        229        2.29       99.92
                    8304 |          2        0.02       99.94
                    8309 |          1        0.01       99.95
                    8310 |          1        0.01       99.96
                    8401 |          3        0.03       99.99
                    8402 |          1        0.01      100.00
-------------------------+-----------------------------------
                   Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016