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

         a2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,846       48.46       48.46
          1 |         46        0.46       48.92
          2 |         77        0.77       49.69
          3 |         91        0.91       50.60
          4 |         90        0.90       51.50
          5 |         91        0.91       52.41
          6 |        105        1.05       53.46
          7 |        130        1.30       54.76
          8 |        147        1.47       56.23
          9 |        163        1.63       57.86
         10 |        185        1.85       59.71
         11 |        173        1.73       61.44
         12 |        207        2.07       63.51
         13 |        225        2.25       65.76
         14 |        265        2.65       68.41
         15 |        237        2.37       70.78
         16 |        248        2.48       73.26
         17 |        226        2.26       75.52
         18 |        237        2.37       77.89
         19 |        208        2.08       79.97
         20 |        270        2.70       82.67
         21 |        235        2.35       85.02
         22 |        217        2.17       87.19
         23 |        194        1.94       89.13
         24 |        165        1.65       90.78
         25 |        158        1.58       92.36
         26 |        135        1.35       93.71
         27 |        122        1.22       94.93
         28 |         99        0.99       95.92
         29 |         72        0.72       96.64
         30 |         57        0.57       97.21
         31 |         39        0.39       97.60
         32 |         49        0.49       98.09
         33 |         28        0.28       98.37
         34 |         36        0.36       98.73
         35 |         18        0.18       98.91
         36 |         23        0.23       99.14
         37 |         15        0.15       99.29
         38 |         17        0.17       99.46
         39 |         17        0.17       99.63
         40 |          6        0.06       99.69
         41 |          6        0.06       99.75
         42 |          3        0.03       99.78
         43 |          6        0.06       99.84
         44 |          5        0.05       99.89
         45 |          1        0.01       99.90
         46 |          1        0.01       99.91
         47 |          2        0.02       99.93
         48 |          2        0.02       99.95
         49 |          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