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

         a9 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,567       45.67       45.67
          1 |         69        0.69       46.36
          2 |        103        1.03       47.39
          3 |        105        1.05       48.44
          4 |         97        0.97       49.41
          5 |        121        1.21       50.62
          6 |        145        1.45       52.07
          7 |        156        1.56       53.63
          8 |        145        1.45       55.08
          9 |        197        1.97       57.05
         10 |        157        1.57       58.62
         11 |        209        2.09       60.71
         12 |        204        2.04       62.75
         13 |        223        2.23       64.98
         14 |        226        2.26       67.24
         15 |        254        2.54       69.78
         16 |        273        2.73       72.51
         17 |        276        2.76       75.27
         18 |        248        2.48       77.75
         19 |        252        2.52       80.27
         20 |        234        2.34       82.61
         21 |        242        2.42       85.03
         22 |        211        2.11       87.14
         23 |        178        1.78       88.92
         24 |        151        1.51       90.43
         25 |        162        1.62       92.05
         26 |        124        1.24       93.29
         27 |        111        1.11       94.40
         28 |         90        0.90       95.30
         29 |         79        0.79       96.09
         30 |         73        0.73       96.82
         31 |         56        0.56       97.38
         32 |         48        0.48       97.86
         33 |         40        0.40       98.26
         34 |         38        0.38       98.64
         35 |         27        0.27       98.91
         36 |         16        0.16       99.07
         37 |         19        0.19       99.26
         38 |          4        0.04       99.30
         39 |         15        0.15       99.45
         40 |         12        0.12       99.57
         41 |          6        0.06       99.63
         42 |          5        0.05       99.68
         43 |          6        0.06       99.74
         44 |          6        0.06       99.80
         45 |          2        0.02       99.82
         46 |          6        0.06       99.88
         47 |          3        0.03       99.91
         48 |          2        0.02       99.93
         49 |          4        0.04       99.97
         51 |          1        0.01       99.98
         57 |          1        0.01       99.99
         59 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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