Frequencies for first 10,000 rows of ser_tr variable in person dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 666 6.66 6.66 *** | 6,045 60.45 67.11 20S | 1 0.01 67.12 30S | 3 0.03 67.15 40S | 21 0.21 67.36 44P | 10 0.10 67.46 600 | 20 0.20 67.66 700 | 4 0.04 67.70 70S | 1 0.01 67.71 720 | 2 0.02 67.73 80S | 1 0.01 67.74 90S | 7 0.07 67.81 910 | 2 0.02 67.83 920 | 12 0.12 67.95 940 | 11 0.11 68.06 990 | 4 0.04 68.10 999 | 400 4.00 72.10 ARO | 14 0.14 72.24 AST | 24 0.24 72.48 AVL | 13 0.13 72.61 B20 | 2 0.02 72.63 B22 | 4 0.04 72.67 B26 | 2 0.02 72.69 B30 | 3 0.03 72.72 B40 | 3 0.03 72.75 C10 | 16 0.16 72.91 C15 | 12 0.12 73.03 C25 | 2 0.02 73.05 C30 | 2 0.02 73.07 C45 | 2 0.02 73.09 C55 | 3 0.03 73.12 C60 | 1 0.01 73.13 C65 | 1 0.01 73.14 C75 | 4 0.04 73.18 CAL | 18 0.18 73.36 CAN | 10 0.10 73.46 CAR | 2 0.02 73.48 CF | 2 0.02 73.50 CHA | 14 0.14 73.64 CHK | 39 0.39 74.03 CMD | 1 0.01 74.04 CNV | 4 0.04 74.08 COE | 10 0.10 74.18 COF | 309 3.09 77.27 COH | 2 0.02 77.29 COL | 3 0.03 77.32 COM | 1 0.01 77.33 CON | 265 2.65 79.98 CSC | 6 0.06 80.04 CSR | 4 0.04 80.08 CTV | 34 0.34 80.42 CWS | 6 0.06 80.48 D15 | 5 0.05 80.53 D21 | 1 0.01 80.54 D30 | 1 0.01 80.55 DAK | 49 0.49 81.04 DEN | 10 0.10 81.14 DIS | 9 0.09 81.23 DRW | 32 0.32 81.55 ECO | 29 0.29 81.84 ELC | 5 0.05 81.89 ENV | 15 0.15 82.04 ESC | 2 0.02 82.06 ETV | 1 0.01 82.07 EXP | 61 0.61 82.68 FM2 | 8 0.08 82.76 FRT | 46 0.46 83.22 FTR | 1 0.01 83.23 GCK | 90 0.90 84.13 GM4 | 118 1.18 85.31 HIN | 5 0.05 85.36 HTL | 1 0.01 85.37 HTP | 31 0.31 85.68 HUM | 13 0.13 85.81 J/E | 2 0.02 85.83 JEE | 1 0.01 85.84 JMY | 10 0.10 85.94 K10 | 2 0.02 85.96 K15 | 30 0.30 86.26 K25 | 3 0.03 86.29 LCF | 2 0.02 86.31 LIB | 24 0.24 86.55 MCV | 9 0.09 86.64 MHV | 6 0.06 86.70 MMX | 1 0.01 86.71 MNT | 6 0.06 86.77 MON | 9 0.09 86.86 MSP | 1 0.01 86.87 NPR | 7 0.07 86.94 NQR | 1 0.01 86.95 P30 | 12 0.12 87.07 PRO | 3 0.03 87.10 PUP | 1 0.01 87.11 R/V | 2 0.02 87.13 R10 | 2 0.02 87.15 R15 | 1 0.01 87.16 R50 | 2 0.02 87.18 RID | 2 0.02 87.20 RMV | 8 0.08 87.28 RMW | 11 0.11 87.39 RNG | 101 1.01 88.40 RPC | 194 1.94 90.34 RRV | 3 0.03 90.37 RSP | 1 0.01 90.38 S | 72 0.72 91.10 S/V | 8 0.08 91.18 S10 | 6 0.06 91.24 S15 | 3 0.03 91.27 SAF | 33 0.33 91.60 SAV | 18 0.18 91.78 SIE | 104 1.04 92.82 SIL | 234 2.34 95.16 SNR | 1 0.01 95.17 SON | 11 0.11 95.28 SPR | 1 0.01 95.29 SRW | 96 0.96 96.25 STE | 12 0.12 96.37 STV | 3 0.03 96.40 T10 | 1 0.01 96.41 T7F | 3 0.03 96.44 TAC | 66 0.66 97.10 TOP | 2 0.02 97.12 TRA | 1 0.01 97.13 TRK | 17 0.17 97.30 TSP | 2 0.02 97.32 TSR | 1 0.01 97.33 TTN | 21 0.21 97.54 TUN | 40 0.40 97.94 UDS | 5 0.05 97.99 UHT | 12 0.12 98.11 UPL | 2 0.02 98.13 V15 | 1 0.01 98.14 VAN | 35 0.35 98.49 VTR | 15 0.15 98.64 VVN | 29 0.29 98.93 W/T | 22 0.22 99.15 W/Y | 7 0.07 99.22 W10 | 1 0.01 99.23 W20 | 1 0.01 99.24 WAG | 2 0.02 99.26 WCN | 2 0.02 99.28 WHC | 2 0.02 99.30 WIN | 19 0.19 99.49 WRA | 5 0.05 99.54 XPD | 1 0.01 99.55 Y/D | 3 0.03 99.58 YUK | 42 0.42 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016