Frequencies for first 10,000 rows of a9 variable in miacc dataset :

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,757       57.57       57.57
          1 |         50        0.50       58.07
          2 |         71        0.71       58.78
          3 |         84        0.84       59.62
          4 |         64        0.64       60.26
          5 |         78        0.78       61.04
          6 |        113        1.13       62.17
          7 |        108        1.08       63.25
          8 |        120        1.20       64.45
          9 |        131        1.31       65.76
         10 |        170        1.70       67.46
         11 |        171        1.71       69.17
         12 |        177        1.77       70.94
         13 |        177        1.77       72.71
         14 |        172        1.72       74.43
         15 |        171        1.71       76.14
         16 |        166        1.66       77.80
         17 |        174        1.74       79.54
         18 |        207        2.07       81.61
         19 |        196        1.96       83.57
         20 |        189        1.89       85.46
         21 |        184        1.84       87.30
         22 |        171        1.71       89.01
         23 |        160        1.60       90.61
         24 |        125        1.25       91.86
         25 |        122        1.22       93.08
         26 |        107        1.07       94.15
         27 |         94        0.94       95.09
         28 |         86        0.86       95.95
         29 |         56        0.56       96.51
         30 |         65        0.65       97.16
         31 |         43        0.43       97.59
         32 |         40        0.40       97.99
         33 |         38        0.38       98.37
         34 |         24        0.24       98.61
         35 |         29        0.29       98.90
         36 |         17        0.17       99.07
         37 |         15        0.15       99.22
         38 |         24        0.24       99.46
         39 |          9        0.09       99.55
         40 |          8        0.08       99.63
         41 |          4        0.04       99.67
         42 |          8        0.08       99.75
         43 |          4        0.04       99.79
         45 |          2        0.02       99.81
         46 |          2        0.02       99.83
         48 |          2        0.02       99.85
         49 |          2        0.02       99.87
         51 |          2        0.02       99.89
         52 |          2        0.02       99.91
         54 |          2        0.02       99.93
         55 |          3        0.03       99.96
         58 |          1        0.01       99.97
         66 |          1        0.01       99.98
         71 |          1        0.01       99.99
         72 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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