Frequencies for first 10,000 rows of pct012g072 variable in sf12000860us22 dataset :

   69 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,531       85.31       85.31
          1 |        954        9.54       94.85
          2 |        229        2.29       97.14
          3 |        114        1.14       98.28
          4 |         51        0.51       98.79
          5 |         26        0.26       99.05
          6 |         22        0.22       99.27
          7 |         19        0.19       99.46
          8 |         14        0.14       99.60
          9 |         15        0.15       99.75
         10 |          7        0.07       99.82
         11 |          5        0.05       99.87
         12 |          2        0.02       99.89
         13 |          3        0.03       99.92
         14 |          1        0.01       99.93
         15 |          5        0.05       99.98
         16 |          1        0.01       99.99
         19 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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