Frequencies for first 10,000 rows of a1 variable in miacc dataset :

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,061       60.61       60.61
          1 |         46        0.46       61.07
          2 |         74        0.74       61.81
          3 |         85        0.85       62.66
          4 |         82        0.82       63.48
          5 |         93        0.93       64.41
          6 |        104        1.04       65.45
          7 |         87        0.87       66.32
          8 |        134        1.34       67.66
          9 |        127        1.27       68.93
         10 |        126        1.26       70.19
         11 |        166        1.66       71.85
         12 |        147        1.47       73.32
         13 |        155        1.55       74.87
         14 |        149        1.49       76.36
         15 |        192        1.92       78.28
         16 |        166        1.66       79.94
         17 |        146        1.46       81.40
         18 |        174        1.74       83.14
         19 |        184        1.84       84.98
         20 |        170        1.70       86.68
         21 |        131        1.31       87.99
         22 |        141        1.41       89.40
         23 |        162        1.62       91.02
         24 |        110        1.10       92.12
         25 |        108        1.08       93.20
         26 |        108        1.08       94.28
         27 |         98        0.98       95.26
         28 |         71        0.71       95.97
         29 |         57        0.57       96.54
         30 |         60        0.60       97.14
         31 |         42        0.42       97.56
         32 |         42        0.42       97.98
         33 |         40        0.40       98.38
         34 |         20        0.20       98.58
         35 |         32        0.32       98.90
         36 |         21        0.21       99.11
         37 |         10        0.10       99.21
         38 |         18        0.18       99.39
         39 |          9        0.09       99.48
         40 |         11        0.11       99.59
         41 |         10        0.10       99.69
         42 |          2        0.02       99.71
         43 |          5        0.05       99.76
         44 |          6        0.06       99.82
         45 |          5        0.05       99.87
         46 |          3        0.03       99.90
         47 |          3        0.03       99.93
         48 |          3        0.03       99.96
         49 |          2        0.02       99.98
         50 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016