Frequencies for psu variable in fmli132 dataset :

        psu |      Freq.     Percent        Cum.
------------+-----------------------------------
            |      3,817       56.45       56.45
       1102 |        196        2.90       59.35
       1103 |        141        2.09       61.43
       1109 |        186        2.75       64.18
       1110 |        158        2.34       66.52
       1111 |        154        2.28       68.80
       1207 |        241        3.56       72.36
       1208 |        116        1.72       74.08
       1210 |         68        1.01       75.08
       1211 |         73        1.08       76.16
       1312 |        141        2.09       78.25
       1313 |         68        1.01       79.25
       1316 |        145        2.14       81.40
       1318 |        123        1.82       83.22
       1319 |        126        1.86       85.08
       1320 |        100        1.48       86.56
       1419 |        323        4.78       91.33
       1420 |        122        1.80       93.14
       1422 |        190        2.81       95.95
       1423 |        105        1.55       97.50
       1424 |         81        1.20       98.70
       1429 |         88        1.30      100.00
------------+-----------------------------------
      Total |      6,762      100.00

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