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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      5,573       55.73       55.73
          1 |         47        0.47       56.20
          2 |         79        0.79       56.99
          3 |         82        0.82       57.81
          4 |         81        0.81       58.62
          5 |         75        0.75       59.37
          6 |         88        0.88       60.25
          7 |         99        0.99       61.24
          8 |        124        1.24       62.48
          9 |        130        1.30       63.78
         10 |        162        1.62       65.40
         11 |        163        1.63       67.03
         12 |        198        1.98       69.01
         13 |        216        2.16       71.17
         14 |        189        1.89       73.06
         15 |        184        1.84       74.90
         16 |        212        2.12       77.02
         17 |        203        2.03       79.05
         18 |        193        1.93       80.98
         19 |        203        2.03       83.01
         20 |        197        1.97       84.98
         21 |        164        1.64       86.62
         22 |        173        1.73       88.35
         23 |        153        1.53       89.88
         24 |        145        1.45       91.33
         25 |        140        1.40       92.73
         26 |        114        1.14       93.87
         27 |         85        0.85       94.72
         28 |         80        0.80       95.52
         29 |         88        0.88       96.40
         30 |         67        0.67       97.07
         31 |         34        0.34       97.41
         32 |         50        0.50       97.91
         33 |         43        0.43       98.34
         34 |         34        0.34       98.68
         35 |         28        0.28       98.96
         36 |         20        0.20       99.16
         37 |         13        0.13       99.29
         38 |         14        0.14       99.43
         39 |          8        0.08       99.51
         40 |         12        0.12       99.63
         41 |         12        0.12       99.75
         42 |          5        0.05       99.80
         43 |          1        0.01       99.81
         44 |          6        0.06       99.87
         45 |          5        0.05       99.92
         46 |          2        0.02       99.94
         47 |          1        0.01       99.95
         48 |          2        0.02       99.97
         56 |          1        0.01       99.98
         67 |          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