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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,864       48.64       48.64
          1 |         63        0.63       49.27
          2 |         98        0.98       50.25
          3 |         99        0.99       51.24
          4 |        100        1.00       52.24
          5 |        111        1.11       53.35
          6 |        139        1.39       54.74
          7 |        125        1.25       55.99
          8 |        128        1.28       57.27
          9 |        178        1.78       59.05
         10 |        186        1.86       60.91
         11 |        200        2.00       62.91
         12 |        192        1.92       64.83
         13 |        202        2.02       66.85
         14 |        210        2.10       68.95
         15 |        230        2.30       71.25
         16 |        241        2.41       73.66
         17 |        274        2.74       76.40
         18 |        229        2.29       78.69
         19 |        230        2.30       80.99
         20 |        241        2.41       83.40
         21 |        220        2.20       85.60
         22 |        203        2.03       87.63
         23 |        192        1.92       89.55
         24 |        164        1.64       91.19
         25 |        149        1.49       92.68
         26 |        122        1.22       93.90
         27 |        118        1.18       95.08
         28 |         93        0.93       96.01
         29 |         81        0.81       96.82
         30 |         77        0.77       97.59
         31 |         43        0.43       98.02
         32 |         39        0.39       98.41
         33 |         30        0.30       98.71
         34 |         12        0.12       98.83
         35 |         20        0.20       99.03
         36 |         15        0.15       99.18
         37 |         19        0.19       99.37
         38 |         14        0.14       99.51
         39 |          5        0.05       99.56
         40 |          7        0.07       99.63
         41 |          5        0.05       99.68
         42 |          6        0.06       99.74
         43 |          6        0.06       99.80
         44 |          4        0.04       99.84
         45 |          4        0.04       99.88
         46 |          2        0.02       99.90
         47 |          2        0.02       99.92
         48 |          1        0.01       99.93
         49 |          1        0.01       99.94
         52 |          2        0.02       99.96
         53 |          2        0.02       99.98
         56 |          1        0.01       99.99
         66 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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