Frequencies for preg_stat variable in parkwork dataset :

    vehicle |
registratio |
    n state |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         30        2.62        2.62
          1 |         15        1.31        3.93
          2 |          1        0.09        4.01
          3 |          1        0.09        4.10
          4 |         17        1.48        5.58
          5 |          5        0.44        6.02
          6 |        180       15.71       21.73
          8 |         18        1.57       23.30
          9 |         22        1.92       25.22
         10 |          4        0.35       25.57
         11 |          3        0.26       25.83
         12 |         68        5.93       31.76
         13 |         22        1.92       33.68
         15 |          8        0.70       34.38
         16 |          1        0.09       34.47
         17 |         39        3.40       37.87
         18 |         25        2.18       40.05
         19 |         10        0.87       40.92
         20 |         10        0.87       41.80
         21 |         12        1.05       42.84
         22 |         11        0.96       43.80
         23 |         11        0.96       44.76
         24 |         13        1.13       45.90
         25 |         18        1.57       47.47
         26 |         26        2.27       49.74
         27 |         11        0.96       50.70
         28 |          4        0.35       51.05
         29 |         19        1.66       52.71
         30 |          2        0.17       52.88
         31 |          2        0.17       53.05
         32 |          7        0.61       53.66
         33 |          3        0.26       53.93
         34 |         31        2.71       56.63
         35 |          1        0.09       56.72
         36 |         91        7.94       64.66
         37 |         22        1.92       66.58
         38 |          2        0.17       66.75
         39 |         33        2.88       69.63
         40 |         14        1.22       70.86
         41 |          3        0.26       71.12
         42 |         61        5.32       76.44
         44 |          3        0.26       76.70
         45 |         20        1.75       78.45
         46 |          4        0.35       78.80
         47 |         21        1.83       80.63
         48 |         84        7.33       87.96
         49 |         19        1.66       89.62
         50 |          1        0.09       89.70
         51 |         17        1.48       91.19
         53 |         10        0.87       92.06
         54 |          7        0.61       92.67
         55 |          9        0.79       93.46
         56 |          3        0.26       93.72
         91 |          6        0.52       94.24
         92 |         27        2.36       96.60
         93 |          8        0.70       97.29
         95 |          2        0.17       97.47
         96 |          4        0.35       97.82
         98 |          1        0.09       97.91
         99 |         24        2.09      100.00
------------+-----------------------------------
      Total |      1,146      100.00

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