Frequencies for pmake variable in parkwork dataset :

    vehicle |
       make |      Freq.     Percent        Cum.
------------+-----------------------------------
          2 |         27        2.47        2.47
          3 |          1        0.09        2.57
          6 |         28        2.57        5.13
          7 |         76        6.97       12.10
          9 |          5        0.46       12.56
         10 |          1        0.09       12.65
         12 |        191       17.51       30.16
         13 |          6        0.55       30.71
         14 |         13        1.19       31.90
         18 |         12        1.10       33.00
         19 |         13        1.19       34.19
         20 |        141       12.92       47.11
         21 |          5        0.46       47.57
         22 |         13        1.19       48.76
         23 |         44        4.03       52.80
         24 |          9        0.82       53.62
         29 |          1        0.09       53.71
         30 |         13        1.19       54.90
         32 |          1        0.09       55.00
         34 |         10        0.92       55.91
         35 |         44        4.03       59.95
         37 |         57        5.22       65.17
         38 |          7        0.64       65.81
         41 |         16        1.47       67.28
         42 |         14        1.28       68.56
         45 |          2        0.18       68.74
         47 |          1        0.09       68.84
         48 |         11        1.01       69.84
         49 |         92        8.43       78.28
         51 |          9        0.82       79.10
         52 |         10        0.92       80.02
         53 |          4        0.37       80.38
         54 |          8        0.73       81.12
         55 |         18        1.65       82.77
         58 |          7        0.64       83.41
         59 |         12        1.10       84.51
         62 |          3        0.27       84.78
         63 |         16        1.47       86.25
         69 |          2        0.18       86.43
         72 |          4        0.37       86.80
         73 |          1        0.09       86.89
         81 |          1        0.09       86.98
         82 |         36        3.30       90.28
         84 |         39        3.57       93.86
         85 |         10        0.92       94.78
         86 |          6        0.55       95.33
         87 |         13        1.19       96.52
         89 |          1        0.09       96.61
         90 |          1        0.09       96.70
         97 |          1        0.09       96.79
         98 |         21        1.92       98.72
         99 |         14        1.28      100.00
------------+-----------------------------------
      Total |      1,091      100.00

by Jean Roth , jroth@nber.org , 22 Oct 2016