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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,841       58.41       58.41
          1 |         64        0.64       59.05
          2 |         73        0.73       59.78
          3 |         91        0.91       60.69
          4 |         99        0.99       61.68
          5 |         96        0.96       62.64
          6 |         96        0.96       63.60
          7 |         97        0.97       64.57
          8 |        129        1.29       65.86
          9 |        131        1.31       67.17
         10 |        151        1.51       68.68
         11 |        149        1.49       70.17
         12 |        172        1.72       71.89
         13 |        173        1.73       73.62
         14 |        156        1.56       75.18
         15 |        200        2.00       77.18
         16 |        202        2.02       79.20
         17 |        164        1.64       80.84
         18 |        181        1.81       82.65
         19 |        182        1.82       84.47
         20 |        174        1.74       86.21
         21 |        177        1.77       87.98
         22 |        173        1.73       89.71
         23 |        151        1.51       91.22
         24 |        122        1.22       92.44
         25 |        116        1.16       93.60
         26 |        104        1.04       94.64
         27 |         95        0.95       95.59
         28 |         72        0.72       96.31
         29 |         66        0.66       96.97
         30 |         44        0.44       97.41
         31 |         47        0.47       97.88
         32 |         35        0.35       98.23
         33 |         26        0.26       98.49
         34 |         25        0.25       98.74
         35 |         22        0.22       98.96
         36 |         12        0.12       99.08
         37 |         14        0.14       99.22
         38 |         24        0.24       99.46
         39 |         12        0.12       99.58
         40 |          6        0.06       99.64
         41 |          9        0.09       99.73
         42 |          6        0.06       99.79
         43 |          2        0.02       99.81
         44 |          2        0.02       99.83
         45 |          5        0.05       99.88
         46 |          2        0.02       99.90
         47 |          1        0.01       99.91
         49 |          1        0.01       99.92
         50 |          1        0.01       99.93
         52 |          1        0.01       99.94
         54 |          1        0.01       99.95
         56 |          1        0.01       99.96
         57 |          1        0.01       99.97
         61 |          1        0.01       99.98
         69 |          1        0.01       99.99
         89 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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