Frequencies for first 10,000 rows of pct013g033 variable in sf12010880us36 dataset :

   21 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,926       69.26       69.26
          1 |      1,129       11.29       80.55
          2 |        500        5.00       85.55
          3 |        271        2.71       88.26
          4 |        206        2.06       90.32
          5 |        163        1.63       91.95
          6 |        141        1.41       93.36
          7 |         86        0.86       94.22
          8 |         78        0.78       95.00
          9 |         79        0.79       95.79
         10 |         57        0.57       96.36
         11 |         44        0.44       96.80
         12 |         37        0.37       97.17
         13 |         39        0.39       97.56
         14 |         35        0.35       97.91
         15 |         20        0.20       98.11
         16 |         20        0.20       98.31
         17 |         19        0.19       98.50
         18 |         15        0.15       98.65
         19 |         22        0.22       98.87
         20 |         15        0.15       99.02
         21 |         14        0.14       99.16
         22 |          8        0.08       99.24
         23 |          6        0.06       99.30
         24 |         10        0.10       99.40
         25 |          6        0.06       99.46
         26 |          4        0.04       99.50
         27 |          4        0.04       99.54
         28 |          5        0.05       99.59
         29 |          4        0.04       99.63
         30 |          4        0.04       99.67
         31 |          2        0.02       99.69
         32 |          4        0.04       99.73
         33 |          2        0.02       99.75
         34 |          2        0.02       99.77
         35 |          2        0.02       99.79
         36 |          2        0.02       99.81
         37 |          1        0.01       99.82
         38 |          3        0.03       99.85
         39 |          1        0.01       99.86
         41 |          1        0.01       99.87
         42 |          3        0.03       99.90
         43 |          1        0.01       99.91
         46 |          1        0.01       99.92
         47 |          1        0.01       99.93
         48 |          1        0.01       99.94
         52 |          3        0.03       99.97
         56 |          2        0.02       99.99
         69 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 May 2017