Frequencies for bi variable in dapstate2014 dataset :

                        bi |      Freq.     Percent        Cum.
---------------------------+-----------------------------------
          11.1557846069336 |          1        1.92        1.92
          12.3046646118164 |          1        1.92        3.85
          12.3657608032227 |          1        1.92        5.77
          12.9475479125977 |          1        1.92        7.69
          13.7076416015625 |          1        1.92        9.62
          15.4924163818359 |          1        1.92       11.54
          16.2387390136719 |          1        1.92       13.46
          16.9340667724609 |          1        1.92       15.38
          18.8448486328125 |          1        1.92       17.31
          18.9755096435547 |          1        1.92       19.23
          19.3230743408203 |          1        1.92       21.15
          19.6419067382813 |          1        1.92       23.08
          19.7339172363281 |          1        1.92       25.00
          20.1184539794922 |          1        1.92       26.92
          20.1996307373047 |          1        1.92       28.85
          20.2848358154297 |          1        1.92       30.77
          20.5325775146484 |          1        1.92       32.69
          20.6732482910156 |          1        1.92       34.62
          20.8440399169922 |          1        1.92       36.54
          20.8749694824219 |          1        1.92       38.46
          21.0778350830078 |          1        1.92       40.38
          21.4135437011719 |          1        1.92       42.31
          21.7573699951172 |          1        1.92       44.23
          22.1571197509766 |          1        1.92       46.15
          22.2097473144531 |          1        1.92       48.08
          22.3900604248047 |          1        1.92       50.00
          22.4013519287109 |          1        1.92       51.92
          23.0847015380859 |          1        1.92       53.85
           23.157470703125 |          1        1.92       55.77
          23.2434997558594 |          1        1.92       57.69
          23.3298034667969 |          1        1.92       59.62
          23.5289306640625 |          1        1.92       61.54
          23.9507293701172 |          1        1.92       63.46
          24.8970184326172 |          1        1.92       65.38
          25.0764770507813 |          1        1.92       67.31
          25.2175903320313 |          1        1.92       69.23
          25.4460601806641 |          1        1.92       71.15
          25.7092590332031 |          1        1.92       73.08
           25.879638671875 |          1        1.92       75.00
          26.3761138916016 |          1        1.92       76.92
          26.5458374023438 |          1        1.92       78.85
          26.8794708251953 |          1        1.92       80.77
          27.1015014648438 |          1        1.92       82.69
          27.9074096679688 |          1        1.92       84.62
          29.0296478271484 |          1        1.92       86.54
          29.0890350341797 |          1        1.92       88.46
          30.5637817382813 |          1        1.92       90.38
              31.177734375 |          1        1.92       92.31
          31.1808166503906 |          1        1.92       94.23
          32.1542663574219 |          1        1.92       96.15
          32.9566040039063 |          1        1.92       98.08
          36.0109558105469 |          1        1.92      100.00
---------------------------+-----------------------------------
                     Total |         52      100.00

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