Frequencies for first 10,000 rows of effective_date variable in nadac20171227 d Effective | Date of the | NADAC Per | Unit Cost | Freq. Percent Cum. ------------+----------------------------------- 21dec2016 | 43 0.43 0.43 26dec2016 | 4 0.04 0.47 31dec2016 | 5 0.05 0.52 01jan2017 | 110 1.10 1.62 04jan2017 | 27 0.27 1.89 06jan2017 | 14 0.14 2.03 09jan2017 | 1 0.01 2.04 18jan2017 | 23 0.23 2.27 23jan2017 | 1 0.01 2.28 17feb2017 | 1 0.01 2.29 22feb2017 | 41 0.41 2.70 23feb2017 | 1 0.01 2.71 28feb2017 | 1 0.01 2.72 02mar2017 | 1 0.01 2.73 08mar2017 | 3 0.03 2.76 15mar2017 | 1 0.01 2.77 17mar2017 | 1 0.01 2.78 22mar2017 | 102 1.02 3.80 23mar2017 | 3 0.03 3.83 01apr2017 | 3 0.03 3.86 03apr2017 | 3 0.03 3.89 07apr2017 | 3 0.03 3.92 12apr2017 | 1 0.01 3.93 19apr2017 | 66 0.66 4.59 24apr2017 | 10 0.10 4.69 02may2017 | 3 0.03 4.72 03may2017 | 1 0.01 4.73 16may2017 | 1 0.01 4.74 17may2017 | 86 0.86 5.60 31may2017 | 1 0.01 5.61 01jun2017 | 134 1.34 6.95 08jun2017 | 16 0.16 7.11 21jun2017 | 87 0.87 7.98 28jun2017 | 1 0.01 7.99 29jun2017 | 5 0.05 8.04 01jul2017 | 5 0.05 8.09 05jul2017 | 2 0.02 8.11 11jul2017 | 42 0.42 8.53 12jul2017 | 1 0.01 8.54 19jul2017 | 181 1.81 10.35 27jul2017 | 1 0.01 10.36 02aug2017 | 1 0.01 10.37 09aug2017 | 1 0.01 10.38 23aug2017 | 120 1.20 11.58 06sep2017 | 5 0.05 11.63 11sep2017 | 1 0.01 11.64 13sep2017 | 3 0.03 11.67 20sep2017 | 166 1.66 13.33 28sep2017 | 1 0.01 13.34 29sep2017 | 4 0.04 13.38 01oct2017 | 1 0.01 13.39 05oct2017 | 1 0.01 13.40 11oct2017 | 3 0.03 13.43 18oct2017 | 235 2.35 15.78 01nov2017 | 1 0.01 15.79 08nov2017 | 5 0.05 15.84 22nov2017 | 527 5.27 21.11 23nov2017 | 3 0.03 21.14 29nov2017 | 3 0.03 21.17 01dec2017 | 1 0.01 21.18 05dec2017 | 13 0.13 21.31 06dec2017 | 1 0.01 21.32 13dec2017 | 5 0.05 21.37 15dec2017 | 12 0.12 21.49 19dec2017 | 6 0.06 21.55 20dec2017 | 7,836 78.36 99.91 21dec2017 | 1 0.01 99.92 27dec2017 | 8 0.08 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 10 Feb 2018