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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,043       50.43       50.43
          1 |         44        0.44       50.87
          2 |         79        0.79       51.66
          3 |         98        0.98       52.64
          4 |         81        0.81       53.45
          5 |         84        0.84       54.29
          6 |         91        0.91       55.20
          7 |        123        1.23       56.43
          8 |        139        1.39       57.82
          9 |        157        1.57       59.39
         10 |        167        1.67       61.06
         11 |        178        1.78       62.84
         12 |        192        1.92       64.76
         13 |        197        1.97       66.73
         14 |        228        2.28       69.01
         15 |        218        2.18       71.19
         16 |        256        2.56       73.75
         17 |        249        2.49       76.24
         18 |        245        2.45       78.69
         19 |        208        2.08       80.77
         20 |        231        2.31       83.08
         21 |        196        1.96       85.04
         22 |        204        2.04       87.08
         23 |        178        1.78       88.86
         24 |        165        1.65       90.51
         25 |        131        1.31       91.82
         26 |        150        1.50       93.32
         27 |         95        0.95       94.27
         28 |        103        1.03       95.30
         29 |         83        0.83       96.13
         30 |         78        0.78       96.91
         31 |         50        0.50       97.41
         32 |         37        0.37       97.78
         33 |         37        0.37       98.15
         34 |         36        0.36       98.51
         35 |         18        0.18       98.69
         36 |         22        0.22       98.91
         37 |         19        0.19       99.10
         38 |         14        0.14       99.24
         39 |         18        0.18       99.42
         40 |          7        0.07       99.49
         41 |         10        0.10       99.59
         42 |          5        0.05       99.64
         43 |          7        0.07       99.71
         44 |          4        0.04       99.75
         45 |          7        0.07       99.82
         46 |          3        0.03       99.85
         47 |          4        0.04       99.89
         48 |          3        0.03       99.92
         49 |          3        0.03       99.95
         52 |          1        0.01       99.96
         54 |          1        0.01       99.97
         56 |          1        0.01       99.98
         71 |          1        0.01       99.99
         88 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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