Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 4 0.04 0.04 *** | 6,259 62.59 62.63 10S | 1 0.01 62.64 150 | 2 0.02 62.66 200 | 2 0.02 62.68 20S | 1 0.01 62.69 3/4 | 5 0.05 62.74 30S | 1 0.01 62.75 40S | 6 0.06 62.81 44P | 58 0.58 63.39 600 | 30 0.30 63.69 620 | 13 0.13 63.82 700 | 3 0.03 63.85 70S | 1 0.01 63.86 720 | 72 0.72 64.58 80S | 3 0.03 64.61 90S | 18 0.18 64.79 930 | 8 0.08 64.87 937 | 9 0.09 64.96 999 | 789 7.89 72.85 A10 | 1 0.01 72.86 ACL | 1 0.01 72.87 AMI | 2 0.02 72.89 ARO | 19 0.19 73.08 AST | 21 0.21 73.29 B18 | 1 0.01 73.30 B20 | 36 0.36 73.66 B22 | 31 0.31 73.97 B26 | 8 0.08 74.05 BRA | 1 0.01 74.06 BRO | 1 0.01 74.07 C/C | 3 0.03 74.10 C10 | 132 1.32 75.42 C15 | 32 0.32 75.74 C20 | 38 0.38 76.12 C25 | 8 0.08 76.20 C30 | 19 0.19 76.39 C35 | 2 0.02 76.41 C50 | 1 0.01 76.42 C5M | 1 0.01 76.43 C60 | 5 0.05 76.48 C65 | 1 0.01 76.49 C6M | 2 0.02 76.51 C6V | 12 0.12 76.63 C96 | 24 0.24 76.87 C97 | 3 0.03 76.90 CAB | 1 0.01 76.91 CAR | 1 0.01 76.92 CCH | 6 0.06 76.98 CDC | 1 0.01 76.99 CGS | 1 0.01 77.00 CHK | 21 0.21 77.21 CLF | 1 0.01 77.22 CLT | 3 0.03 77.25 CNV | 4 0.04 77.29 COE | 89 0.89 78.18 COF | 395 3.95 82.13 COL | 9 0.09 82.22 CON | 191 1.91 84.13 COU | 2 0.02 84.15 CTS | 11 0.11 84.26 CTV | 23 0.23 84.49 CVS | 15 0.15 84.64 D10 | 13 0.13 84.77 D15 | 17 0.17 84.94 D20 | 12 0.12 85.06 D21 | 67 0.67 85.73 D30 | 10 0.10 85.83 D5I | 14 0.14 85.97 D95 | 5 0.05 86.02 DAK | 21 0.21 86.23 DC9 | 1 0.01 86.24 DK9 | 1 0.01 86.25 E55 | 1 0.01 86.26 ELC | 3 0.03 86.29 F/E | 1 0.01 86.30 F60 | 1 0.01 86.31 F95 | 2 0.02 86.33 FC9 | 3 0.03 86.36 FCC | 1 0.01 86.37 FH1 | 1 0.01 86.38 FJ9 | 1 0.01 86.39 FLS | 1 0.01 86.40 G15 | 1 0.01 86.41 G25 | 1 0.01 86.42 GEO | 1 0.01 86.43 GM4 | 142 1.42 87.85 H95 | 3 0.03 87.88 HFD | 1 0.01 87.89 HFE | 1 0.01 87.90 HI9 | 1 0.01 87.91 HIC | 1 0.01 87.92 HLX | 3 0.03 87.95 HSG | 1 0.01 87.96 HTC | 3 0.03 87.99 HTP | 143 1.43 89.42 HTW | 1 0.01 89.43 J75 | 1 0.01 89.44 J95 | 2 0.02 89.46 JEE | 33 0.33 89.79 JET | 3 0.03 89.82 JOH | 1 0.01 89.83 JPR | 1 0.01 89.84 K10 | 36 0.36 90.20 K15 | 9 0.09 90.29 K20 | 14 0.14 90.43 K25 | 6 0.06 90.49 K30 | 5 0.05 90.54 K35 | 3 0.03 90.57 L37 | 1 0.01 90.58 LB1 | 6 0.06 90.64 LBD | 1 0.01 90.65 LBX | 2 0.02 90.67 LDS | 2 0.02 90.69 LLN | 2 0.02 90.71 LTC | 7 0.07 90.78 LUM | 1 0.01 90.79 M6V | 1 0.01 90.80 M95 | 1 0.01 90.81 MCV | 3 0.03 90.84 MHV | 12 0.12 90.96 MMX | 15 0.15 91.11 MON | 6 0.06 91.17 MRM | 1 0.01 91.18 MVN | 4 0.04 91.22 MXV | 4 0.04 91.26 NPR | 5 0.05 91.31 P10 | 1 0.01 91.32 P30 | 11 0.11 91.43 P42 | 6 0.06 91.49 P52 | 3 0.03 91.52 P62 | 6 0.06 91.58 P65 | 1 0.01 91.59 PAR | 2 0.02 91.61 PCC | 5 0.05 91.66 PFI | 9 0.09 91.75 PUP | 10 0.10 91.85 R/V | 8 0.08 91.93 R10 | 4 0.04 91.97 R15 | 2 0.02 91.99 R20 | 5 0.05 92.04 R25 | 2 0.02 92.06 R30 | 3 0.03 92.09 R35 | 4 0.04 92.13 R50 | 13 0.13 92.26 RAI | 2 0.02 92.28 RBT | 2 0.02 92.30 RKY | 2 0.02 92.32 RMV | 22 0.22 92.54 RNG | 154 1.54 94.08 ROD | 4 0.04 94.12 RUN | 37 0.37 94.49 S | 133 1.33 95.82 S/V | 8 0.08 95.90 S10 | 8 0.08 95.98 S15 | 14 0.14 96.12 S6M | 3 0.03 96.15 SAF | 8 0.08 96.23 SCT | 8 0.08 96.31 SDK | 2 0.02 96.33 SIE | 39 0.39 96.72 SMR | 12 0.12 96.84 SON | 7 0.07 96.91 SPK | 1 0.01 96.92 SPX | 2 0.02 96.94 SS | 28 0.28 97.22 T6V | 1 0.01 97.23 TM7 | 1 0.01 97.24 TNS | 3 0.03 97.27 TRA | 1 0.01 97.28 TRK | 26 0.26 97.54 TRO | 13 0.13 97.67 TV7 | 1 0.01 97.68 UDS | 1 0.01 97.69 UHT | 3 0.03 97.72 V10 | 2 0.02 97.74 V15 | 1 0.01 97.75 V25 | 1 0.01 97.76 V30 | 1 0.01 97.77 V35 | 1 0.01 97.78 VAN | 137 1.37 99.15 VWG | 9 0.09 99.24 W10 | 7 0.07 99.31 W15 | 7 0.07 99.38 W20 | 8 0.08 99.46 W30 | 1 0.01 99.47 WAG | 7 0.07 99.54 WCN | 6 0.06 99.60 WRA | 2 0.02 99.62 X44 | 25 0.25 99.87 XCB | 7 0.07 99.94 XCN | 1 0.01 99.95 XCO | 1 0.01 99.96 XPD | 3 0.03 99.99 YUK | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016