Frequencies for first 10,000 rows of optmtrc_srvc_cd variable in pos2012 datase

   Services |
  Provided: |
 Optometric |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,606       86.06       86.06
          0 |      1,236       12.36       98.42
          1 |         83        0.83       99.25
          2 |         64        0.64       99.89
          3 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 26 Jan 2016