Frequencies for first 10,000 rows of a2 variable in miacc dataset :

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,836       58.36       58.36
          1 |         48        0.48       58.84
          2 |         78        0.78       59.62
          3 |         78        0.78       60.40
          4 |         70        0.70       61.10
          5 |         88        0.88       61.98
          6 |        105        1.05       63.03
          7 |        115        1.15       64.18
          8 |        110        1.10       65.28
          9 |        119        1.19       66.47
         10 |        140        1.40       67.87
         11 |        133        1.33       69.20
         12 |        167        1.67       70.87
         13 |        176        1.76       72.63
         14 |        166        1.66       74.29
         15 |        173        1.73       76.02
         16 |        184        1.84       77.86
         17 |        188        1.88       79.74
         18 |        180        1.80       81.54
         19 |        193        1.93       83.47
         20 |        174        1.74       85.21
         21 |        183        1.83       87.04
         22 |        181        1.81       88.85
         23 |        150        1.50       90.35
         24 |        133        1.33       91.68
         25 |        117        1.17       92.85
         26 |         95        0.95       93.80
         27 |        103        1.03       94.83
         28 |         85        0.85       95.68
         29 |         64        0.64       96.32
         30 |         79        0.79       97.11
         31 |         43        0.43       97.54
         32 |         42        0.42       97.96
         33 |         37        0.37       98.33
         34 |         29        0.29       98.62
         35 |         24        0.24       98.86
         36 |         18        0.18       99.04
         37 |         15        0.15       99.19
         38 |         23        0.23       99.42
         39 |         11        0.11       99.53
         40 |         10        0.10       99.63
         41 |          4        0.04       99.67
         42 |          7        0.07       99.74
         43 |          7        0.07       99.81
         44 |          2        0.02       99.83
         45 |          1        0.01       99.84
         46 |          2        0.02       99.86
         48 |          2        0.02       99.88
         51 |          3        0.03       99.91
         52 |          1        0.01       99.92
         54 |          1        0.01       99.93
         55 |          2        0.02       99.95
         58 |          1        0.01       99.96
         63 |          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