Frequencies for first 10,000 rows of firsttierutilization variable in plan2014 dataset :

 First Tier |
Utilization |      Freq.     Percent        Cum.
------------+-----------------------------------
       100% |      9,275       92.75       92.75
        25% |         20        0.20       92.95
        28% |          6        0.06       93.01
        31% |          2        0.02       93.03
        35% |         33        0.33       93.36
        40% |         20        0.20       93.56
        45% |          2        0.02       93.58
        49% |          1        0.01       93.59
        50% |        106        1.06       94.65
        51% |          5        0.05       94.70
        53% |          1        0.01       94.71
        54% |          6        0.06       94.77
        55% |         14        0.14       94.91
        60% |         42        0.42       95.33
        63% |          1        0.01       95.34
        67% |          1        0.01       95.35
        70% |         27        0.27       95.62
        75% |         30        0.30       95.92
        80% |         79        0.79       96.71
        85% |         38        0.38       97.09
        90% |        273        2.73       99.82
        95% |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 8 Dec 2017