Frequencies for first 10,000 rows of ser_tr variable in person dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 620 6.20 6.20 *** | 6,028 60.28 66.48 3/4 | 1 0.01 66.49 30S | 5 0.05 66.54 40S | 31 0.31 66.85 44P | 2 0.02 66.87 550 | 1 0.01 66.88 560 | 2 0.02 66.90 600 | 28 0.28 67.18 620 | 1 0.01 67.19 700 | 7 0.07 67.26 720 | 2 0.02 67.28 80S | 4 0.04 67.32 90S | 9 0.09 67.41 910 | 4 0.04 67.45 920 | 9 0.09 67.54 940 | 8 0.08 67.62 990 | 1 0.01 67.63 999 | 498 4.98 72.61 ARO | 15 0.15 72.76 AST | 26 0.26 73.02 AVL | 10 0.10 73.12 B20 | 7 0.07 73.19 B22 | 2 0.02 73.21 B23 | 3 0.03 73.24 B25 | 1 0.01 73.25 B30 | 1 0.01 73.26 B40 | 5 0.05 73.31 C10 | 11 0.11 73.42 C15 | 13 0.13 73.55 C20 | 7 0.07 73.62 C35 | 3 0.03 73.65 C45 | 3 0.03 73.68 C65 | 2 0.02 73.70 C75 | 1 0.01 73.71 CAL | 16 0.16 73.87 CAN | 5 0.05 73.92 CHA | 5 0.05 73.97 CHK | 45 0.45 74.42 CMD | 6 0.06 74.48 CNV | 3 0.03 74.51 COE | 6 0.06 74.57 COF | 332 3.32 77.89 COL | 2 0.02 77.91 COM | 3 0.03 77.94 CON | 269 2.69 80.63 CSR | 5 0.05 80.68 CTV | 13 0.13 80.81 CVS | 3 0.03 80.84 D10 | 1 0.01 80.85 D15 | 1 0.01 80.86 D20 | 2 0.02 80.88 D21 | 2 0.02 80.90 D51 | 1 0.01 80.91 DAK | 54 0.54 81.45 DEN | 7 0.07 81.52 DIS | 9 0.09 81.61 DRW | 31 0.31 81.92 ECO | 9 0.09 82.01 ENV | 25 0.25 82.26 ETV | 11 0.11 82.37 EXP | 13 0.13 82.50 FM2 | 2 0.02 82.52 FRT | 43 0.43 82.95 GCK | 81 0.81 83.76 GM4 | 144 1.44 85.20 HIN | 1 0.01 85.21 HOM | 3 0.03 85.24 HTP | 24 0.24 85.48 HUM | 7 0.07 85.55 J/E | 3 0.03 85.58 JMY | 17 0.17 85.75 K10 | 11 0.11 85.86 K15 | 6 0.06 85.92 K25 | 1 0.01 85.93 KTA | 1 0.01 85.94 L10 | 1 0.01 85.95 LIB | 26 0.26 86.21 LUV | 1 0.01 86.22 M/T | 4 0.04 86.26 MCV | 7 0.07 86.33 MHV | 4 0.04 86.37 MMX | 1 0.01 86.38 MST | 2 0.02 86.40 NPR | 9 0.09 86.49 NQR | 1 0.01 86.50 NRR | 1 0.01 86.51 P30 | 2 0.02 86.53 P42 | 3 0.03 86.56 PYS | 1 0.01 86.57 R/V | 12 0.12 86.69 R10 | 1 0.01 86.70 R50 | 1 0.01 86.71 RID | 1 0.01 86.72 RMV | 4 0.04 86.76 RMW | 3 0.03 86.79 RNG | 130 1.30 88.09 RPC | 193 1.93 90.02 RRV | 4 0.04 90.06 S | 83 0.83 90.89 S/V | 26 0.26 91.15 S10 | 8 0.08 91.23 S15 | 8 0.08 91.31 SAF | 12 0.12 91.43 SAV | 6 0.06 91.49 SIE | 123 1.23 92.72 SIL | 209 2.09 94.81 SON | 16 0.16 94.97 SPR | 1 0.01 94.98 SRW | 96 0.96 95.94 SS | 5 0.05 95.99 STE | 15 0.15 96.14 STV | 1 0.01 96.15 T10 | 2 0.02 96.17 TAC | 70 0.70 96.87 TER | 6 0.06 96.93 TRK | 26 0.26 97.19 TSP | 1 0.01 97.20 TSR | 1 0.01 97.21 TTN | 8 0.08 97.29 TUN | 48 0.48 97.77 UDS | 3 0.03 97.80 UHT | 4 0.04 97.84 UNI | 3 0.03 97.87 UPL | 7 0.07 97.94 VAN | 34 0.34 98.28 VHD | 1 0.01 98.29 VTR | 10 0.10 98.39 VVN | 37 0.37 98.76 W/T | 6 0.06 98.82 W/Y | 11 0.11 98.93 W15 | 1 0.01 98.94 W20 | 2 0.02 98.96 W30 | 3 0.03 98.99 WAG | 2 0.02 99.01 WCN | 5 0.05 99.06 WIN | 27 0.27 99.33 WRA | 4 0.04 99.37 XPD | 3 0.03 99.40 Y/D | 5 0.05 99.45 YUK | 55 0.55 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016