Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN | Series-Truc | k | Freq. Percent Cum. ------------+----------------------------------- | 17 0.17 0.17 *** | 5,978 59.78 59.95 150 | 5 0.05 60.00 210 | 1 0.01 60.01 44P | 31 0.31 60.32 600 | 2 0.02 60.34 620 | 39 0.39 60.73 700 | 4 0.04 60.77 720 | 27 0.27 61.04 999 | 1,899 18.99 80.03 A10 | 1 0.01 80.04 ART | 5 0.05 80.09 B20 | 4 0.04 80.13 BR0 | 1 0.01 80.14 BRO | 17 0.17 80.31 BUS | 1 0.01 80.32 C10 | 257 2.57 82.89 C15 | 40 0.40 83.29 C20 | 75 0.75 84.04 C25 | 18 0.18 84.22 C30 | 28 0.28 84.50 C35 | 12 0.12 84.62 C40 | 1 0.01 84.63 C50 | 5 0.05 84.68 C55 | 1 0.01 84.69 C60 | 11 0.11 84.80 C65 | 6 0.06 84.86 C6M | 4 0.04 84.90 C6V | 6 0.06 84.96 CGS | 10 0.10 85.06 CHK | 9 0.09 85.15 CLU | 13 0.13 85.28 COE | 13 0.13 85.41 COF | 395 3.95 89.36 COL | 12 0.12 89.48 CON | 35 0.35 89.83 COT | 1 0.01 89.84 COU | 40 0.40 90.24 CPU | 1 0.01 90.25 CSC | 1 0.01 90.26 CTS | 47 0.47 90.73 CTV | 6 0.06 90.79 CVS | 4 0.04 90.83 CWS | 1 0.01 90.84 D10 | 19 0.19 91.03 D15 | 11 0.11 91.14 D20 | 13 0.13 91.27 D30 | 4 0.04 91.31 D5I | 10 0.10 91.41 D60 | 1 0.01 91.42 D95 | 7 0.07 91.49 DC9 | 3 0.03 91.52 DH9 | 2 0.02 91.54 DJ9 | 1 0.01 91.55 ELC | 12 0.12 91.67 F95 | 1 0.01 91.68 FH9 | 3 0.03 91.71 FLS | 6 0.06 91.77 G25 | 1 0.01 91.78 H75 | 1 0.01 91.79 H95 | 1 0.01 91.80 HI9 | 3 0.03 91.83 HIC | 1 0.01 91.84 HLX | 10 0.10 91.94 HTC | 12 0.12 92.06 HTP | 54 0.54 92.60 HTW | 3 0.03 92.63 J95 | 2 0.02 92.65 JEE | 39 0.39 93.04 JET | 2 0.02 93.06 JH9 | 1 0.01 93.07 JI9 | 2 0.02 93.09 JJ9 | 2 0.02 93.11 K10 | 104 1.04 94.15 K15 | 27 0.27 94.42 K20 | 18 0.18 94.60 K25 | 8 0.08 94.68 K30 | 4 0.04 94.72 K35 | 1 0.01 94.73 KOM | 11 0.11 94.84 LCH | 1 0.01 94.85 LDS | 9 0.09 94.94 LLN | 6 0.06 95.00 LSB | 3 0.03 95.03 LTC | 10 0.10 95.13 LUV | 46 0.46 95.59 M95 | 2 0.02 95.61 MC2 | 2 0.02 95.63 MHC | 1 0.01 95.64 MHV | 20 0.20 95.84 MK2 | 2 0.02 95.86 MTH | 1 0.01 95.87 MXV | 9 0.09 95.96 MXW | 6 0.06 96.02 NH9 | 1 0.01 96.03 P10 | 2 0.02 96.05 P30 | 2 0.02 96.07 P62 | 22 0.22 96.29 PAR | 3 0.03 96.32 PCC | 5 0.05 96.37 PL5 | 3 0.03 96.40 PON | 1 0.01 96.41 RAL | 1 0.01 96.42 RAM | 7 0.07 96.49 RAN | 5 0.05 96.54 RBT | 3 0.03 96.57 RLN | 1 0.01 96.58 RMP | 1 0.01 96.59 RNG | 3 0.03 96.62 RPU | 6 0.06 96.68 RX | 2 0.02 96.70 S | 8 0.08 96.78 S/V | 1 0.01 96.79 SCT | 10 0.10 96.89 SPO | 11 0.11 97.00 SPR | 1 0.01 97.01 SPT | 14 0.14 97.15 SS | 17 0.17 97.32 TM7 | 2 0.02 97.34 TNS | 14 0.14 97.48 TRA | 16 0.16 97.64 TRL | 2 0.02 97.66 TV7 | 1 0.01 97.67 UNI | 1 0.01 97.68 VAN | 193 1.93 99.61 VOY | 3 0.03 99.64 VVN | 3 0.03 99.67 W10 | 11 0.11 99.78 W15 | 1 0.01 99.79 W20 | 5 0.05 99.84 WAG | 11 0.11 99.95 XCO | 5 0.05 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016