Frequencies for first 10,000 rows of ser_tr variable in person dataset : VIN SERIES | TRUCK | Freq. Percent Cum. ------------+----------------------------------- | 623 6.23 6.23 *** | 5,993 59.93 66.16 10S | 1 0.01 66.17 200 | 1 0.01 66.18 20S | 1 0.01 66.19 30S | 11 0.11 66.30 40S | 25 0.25 66.55 44P | 4 0.04 66.59 600 | 27 0.27 66.86 700 | 2 0.02 66.88 720 | 3 0.03 66.91 80S | 2 0.02 66.93 90S | 10 0.10 67.03 910 | 5 0.05 67.08 920 | 13 0.13 67.21 930 | 1 0.01 67.22 937 | 1 0.01 67.23 940 | 3 0.03 67.26 990 | 5 0.05 67.31 999 | 500 5.00 72.31 ARO | 14 0.14 72.45 AST | 8 0.08 72.53 AVL | 19 0.19 72.72 B20 | 2 0.02 72.74 B22 | 5 0.05 72.79 B23 | 7 0.07 72.86 B25 | 1 0.01 72.87 B26 | 1 0.01 72.88 B30 | 4 0.04 72.92 BSR | 43 0.43 73.35 BUS | 1 0.01 73.36 C10 | 20 0.20 73.56 C15 | 15 0.15 73.71 C20 | 6 0.06 73.77 C25 | 2 0.02 73.79 C30 | 2 0.02 73.81 C45 | 1 0.01 73.82 C50 | 1 0.01 73.83 C6V | 2 0.02 73.85 C96 | 1 0.01 73.86 CCH | 1 0.01 73.87 CGS | 1 0.01 73.88 CHA | 9 0.09 73.97 CHK | 47 0.47 74.44 CNV | 6 0.06 74.50 COE | 11 0.11 74.61 COF | 340 3.40 78.01 COH | 1 0.01 78.02 COL | 3 0.03 78.05 CON | 221 2.21 80.26 CRV | 1 0.01 80.27 CSR | 10 0.10 80.37 CTS | 1 0.01 80.38 CTV | 19 0.19 80.57 D10 | 2 0.02 80.59 D15 | 1 0.01 80.60 D20 | 1 0.01 80.61 D21 | 9 0.09 80.70 D30 | 1 0.01 80.71 D51 | 2 0.02 80.73 D5I | 1 0.01 80.74 DAK | 30 0.30 81.04 DEN | 6 0.06 81.10 DIS | 9 0.09 81.19 DRW | 42 0.42 81.61 ECO | 22 0.22 81.83 ENV | 7 0.07 81.90 EPT | 3 0.03 81.93 ESC | 2 0.02 81.95 ETV | 3 0.03 81.98 EXP | 3 0.03 82.01 FE6 | 2 0.02 82.03 FM2 | 1 0.01 82.04 FRE | 1 0.01 82.05 FRT | 30 0.30 82.35 FTR | 1 0.01 82.36 GCK | 65 0.65 83.01 GM4 | 158 1.58 84.59 HFD | 1 0.01 84.60 HTL | 1 0.01 84.61 HTP | 39 0.39 85.00 HUM | 2 0.02 85.02 J/E | 4 0.04 85.06 JEE | 13 0.13 85.19 JMY | 19 0.19 85.38 K10 | 11 0.11 85.49 K15 | 25 0.25 85.74 K25 | 1 0.01 85.75 LIB | 12 0.12 85.87 LUV | 1 0.01 85.88 MAX | 2 0.02 85.90 MCV | 12 0.12 86.02 MHC | 1 0.01 86.03 MHV | 6 0.06 86.09 MMX | 4 0.04 86.13 MRM | 1 0.01 86.14 NPR | 2 0.02 86.16 P30 | 10 0.10 86.26 P62 | 2 0.02 86.28 PUP | 6 0.06 86.34 PYS | 1 0.01 86.35 R/V | 16 0.16 86.51 R10 | 2 0.02 86.53 R15 | 1 0.01 86.54 R25 | 17 0.17 86.71 R35 | 3 0.03 86.74 R50 | 5 0.05 86.79 RAM | 2 0.02 86.81 RMV | 20 0.20 87.01 RMW | 1 0.01 87.02 RNG | 151 1.51 88.53 RPC | 184 1.84 90.37 RRV | 1 0.01 90.38 S | 123 1.23 91.61 S/V | 81 0.81 92.42 S10 | 4 0.04 92.46 S15 | 4 0.04 92.50 SAF | 8 0.08 92.58 SAV | 13 0.13 92.71 SIE | 105 1.05 93.76 SIL | 147 1.47 95.23 SMR | 1 0.01 95.24 SON | 15 0.15 95.39 SRW | 121 1.21 96.60 SS | 8 0.08 96.68 STE | 9 0.09 96.77 STV | 1 0.01 96.78 TAC | 62 0.62 97.40 TNS | 1 0.01 97.41 TOP | 3 0.03 97.44 TRA | 1 0.01 97.45 TRK | 43 0.43 97.88 TTN | 5 0.05 97.93 TUN | 22 0.22 98.15 TWC | 1 0.01 98.16 UDS | 2 0.02 98.18 UHT | 2 0.02 98.20 V15 | 6 0.06 98.26 V25 | 2 0.02 98.28 VAN | 53 0.53 98.81 VHD | 1 0.01 98.82 VVN | 17 0.17 98.99 W/T | 16 0.16 99.15 W/Y | 6 0.06 99.21 W15 | 5 0.05 99.26 WCN | 6 0.06 99.32 WIN | 1 0.01 99.33 WRA | 7 0.07 99.40 X44 | 3 0.03 99.43 XCB | 1 0.01 99.44 XL7 | 4 0.04 99.48 XPD | 1 0.01 99.49 YUK | 51 0.51 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016