Frequencies for preg_stat variable in parkwork dataset :

    vehicle |
registratio |
    n state |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |         15        1.38        1.38
          1 |         12        1.11        2.49
          4 |         17        1.57        4.06
          5 |          6        0.55        4.61
          6 |        171       15.77       20.39
          8 |         12        1.11       21.49
          9 |         15        1.38       22.88
         10 |          1        0.09       22.97
         11 |          1        0.09       23.06
         12 |         66        6.09       29.15
         13 |         21        1.94       31.09
         15 |          2        0.18       31.27
         17 |         45        4.15       35.42
         18 |         31        2.86       38.28
         19 |          1        0.09       38.38
         20 |          7        0.65       39.02
         21 |          9        0.83       39.85
         22 |         15        1.38       41.24
         23 |          1        0.09       41.33
         24 |         25        2.31       43.63
         25 |         12        1.11       44.74
         26 |         38        3.51       48.25
         27 |          6        0.55       48.80
         28 |          5        0.46       49.26
         29 |         31        2.86       52.12
         30 |          4        0.37       52.49
         31 |          1        0.09       52.58
         32 |          7        0.65       53.23
         33 |          3        0.28       53.51
         34 |         30        2.77       56.27
         35 |          5        0.46       56.73
         36 |         82        7.56       64.30
         37 |         40        3.69       67.99
         38 |          2        0.18       68.17
         39 |         48        4.43       72.60
         40 |         15        1.38       73.99
         41 |          5        0.46       74.45
         42 |         51        4.70       79.15
         45 |          8        0.74       79.89
         46 |          1        0.09       79.98
         47 |         25        2.31       82.29
         48 |         84        7.75       90.04
         49 |         12        1.11       91.14
         51 |         15        1.38       92.53
         53 |         17        1.57       94.10
         54 |          8        0.74       94.83
         55 |         12        1.11       95.94
         56 |          2        0.18       96.13
         91 |          9        0.83       96.96
         92 |         12        1.11       98.06
         93 |         11        1.01       99.08
         97 |          1        0.09       99.17
         99 |          9        0.83      100.00
------------+-----------------------------------
      Total |      1,084      100.00

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