Frequencies for intrdvb variable in fmli132 dataset :

    intrdvb |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      6,417       94.90       94.90
         01 |        265        3.92       98.82
         02 |         29        0.43       99.25
         03 |          9        0.13       99.38
         04 |          9        0.13       99.51
         05 |          6        0.09       99.60
         06 |          8        0.12       99.72
         07 |          4        0.06       99.78
         08 |          3        0.04       99.82
         09 |          6        0.09       99.91
         10 |          1        0.01       99.93
         11 |          1        0.01       99.94
         12 |          4        0.06      100.00
------------+-----------------------------------
      Total |      6,762      100.00

by Jean Roth , jroth@nber.org , 17 Mar 2016