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

         a1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,827       48.27       48.27
          1 |         44        0.44       48.71
          2 |         80        0.80       49.51
          3 |         93        0.93       50.44
          4 |         89        0.89       51.33
          5 |         88        0.88       52.21
          6 |        106        1.06       53.27
          7 |        131        1.31       54.58
          8 |        145        1.45       56.03
          9 |        159        1.59       57.62
         10 |        176        1.76       59.38
         11 |        171        1.71       61.09
         12 |        213        2.13       63.22
         13 |        237        2.37       65.59
         14 |        235        2.35       67.94
         15 |        247        2.47       70.41
         16 |        256        2.56       72.97
         17 |        240        2.40       75.37
         18 |        236        2.36       77.73
         19 |        224        2.24       79.97
         20 |        262        2.62       82.59
         21 |        228        2.28       84.87
         22 |        219        2.19       87.06
         23 |        202        2.02       89.08
         24 |        170        1.70       90.78
         25 |        154        1.54       92.32
         26 |        125        1.25       93.57
         27 |        111        1.11       94.68
         28 |         93        0.93       95.61
         29 |         74        0.74       96.35
         30 |         64        0.64       96.99
         31 |         41        0.41       97.40
         32 |         52        0.52       97.92
         33 |         40        0.40       98.32
         34 |         34        0.34       98.66
         35 |         22        0.22       98.88
         36 |         26        0.26       99.14
         37 |         11        0.11       99.25
         38 |         17        0.17       99.42
         39 |         19        0.19       99.61
         40 |          8        0.08       99.69
         41 |          6        0.06       99.75
         42 |          3        0.03       99.78
         43 |          6        0.06       99.84
         44 |          3        0.03       99.87
         45 |          2        0.02       99.89
         47 |          3        0.03       99.92
         48 |          1        0.01       99.93
         49 |          2        0.02       99.95
         50 |          2        0.02       99.97
         56 |          1        0.01       99.98
         59 |          1        0.01       99.99
         80 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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