Frequencies for state variable in nmcrash dataset :

      State |
     Number |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |         83        1.22        1.22
          2 |         11        0.16        1.38
          4 |        260        3.82        5.19
          5 |         44        0.65        5.84
          6 |      1,060       15.55       21.39
          8 |        100        1.47       22.86
          9 |         70        1.03       23.89
         10 |         32        0.47       24.36
         11 |         17        0.25       24.61
         12 |        661        9.70       34.31
         13 |        268        3.93       38.24
         15 |         32        0.47       38.71
         16 |         23        0.34       39.05
         17 |        199        2.92       41.97
         18 |         96        1.41       43.37
         19 |         28        0.41       43.79
         20 |         27        0.40       44.18
         21 |         90        1.32       45.50
         22 |        133        1.95       47.45
         23 |         15        0.22       47.67
         24 |        157        2.30       49.98
         25 |         71        1.04       51.02
         26 |        185        2.71       53.73
         27 |         69        1.01       54.75
         28 |         54        0.79       55.54
         29 |         82        1.20       56.74
         30 |         10        0.15       56.89
         31 |         11        0.16       57.05
         32 |         77        1.13       58.18
         33 |         11        0.16       58.34
         34 |        205        3.01       61.35
         35 |         43        0.63       61.98
         36 |        415        6.09       68.07
         37 |        277        4.06       72.13
         38 |         11        0.16       72.30
         39 |        142        2.08       74.38
         40 |         92        1.35       75.73
         41 |        148        2.17       77.90
         42 |        297        4.36       82.26
         44 |         19        0.28       82.54
         45 |        134        1.97       84.50
         46 |         14        0.21       84.71
         47 |        132        1.94       86.65
         48 |        517        7.59       94.23
         49 |         43        0.63       94.86
         50 |          8        0.12       94.98
         51 |        104        1.53       96.51
         53 |        109        1.60       98.11
         54 |         19        0.28       98.39
         55 |        106        1.56       99.94
         56 |          4        0.06      100.00
------------+-----------------------------------
      Total |      6,815      100.00

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