Frequencies for first 10,000 rows of ser_tr variable in vehicle dataset : VIN | Series-Truc | k | Freq. Percent Cum. ------------+----------------------------------- *** | 6,240 62.40 62.40 150 | 1 0.01 62.41 200 | 2 0.02 62.43 3/4 | 5 0.05 62.48 44P | 74 0.74 63.22 600 | 10 0.10 63.32 620 | 28 0.28 63.60 700 | 6 0.06 63.66 720 | 107 1.07 64.73 8MS | 1 0.01 64.74 999 | 1,560 15.60 80.34 A10 | 6 0.06 80.40 AST | 2 0.02 80.42 B18 | 1 0.01 80.43 B20 | 32 0.32 80.75 BRO | 4 0.04 80.79 BRT | 3 0.03 80.82 BUS | 1 0.01 80.83 C/C | 1 0.01 80.84 C10 | 220 2.20 83.04 C15 | 35 0.35 83.39 C20 | 75 0.75 84.14 C25 | 17 0.17 84.31 C30 | 29 0.29 84.60 C35 | 10 0.10 84.70 C50 | 3 0.03 84.73 C60 | 5 0.05 84.78 C65 | 3 0.03 84.81 C6M | 3 0.03 84.84 C6V | 12 0.12 84.96 C96 | 28 0.28 85.24 CAB | 5 0.05 85.29 CGS | 3 0.03 85.32 CHK | 14 0.14 85.46 CLU | 1 0.01 85.47 COE | 54 0.54 86.01 COF | 386 3.86 89.87 COL | 11 0.11 89.98 CON | 47 0.47 90.45 COT | 1 0.01 90.46 COU | 3 0.03 90.49 CSC | 4 0.04 90.53 CTS | 63 0.63 91.16 CTV | 15 0.15 91.31 CVS | 4 0.04 91.35 CWS | 1 0.01 91.36 D10 | 13 0.13 91.49 D15 | 17 0.17 91.66 D20 | 10 0.10 91.76 D30 | 2 0.02 91.78 D50 | 3 0.03 91.81 D5I | 13 0.13 91.94 D80 | 1 0.01 91.95 D95 | 5 0.05 92.00 DC9 | 1 0.01 92.01 DH9 | 2 0.02 92.03 DJ9 | 1 0.01 92.04 DK9 | 1 0.01 92.05 ELC | 11 0.11 92.16 EPU | 1 0.01 92.17 F95 | 2 0.02 92.19 FH9 | 1 0.01 92.20 FLS | 4 0.04 92.24 G35 | 1 0.01 92.25 H95 | 4 0.04 92.29 HIC | 1 0.01 92.30 HLX | 14 0.14 92.44 HM7 | 1 0.01 92.45 HPC | 1 0.01 92.46 HTC | 11 0.11 92.57 HTP | 85 0.85 93.42 HTW | 4 0.04 93.46 HY7 | 1 0.01 93.47 J95 | 3 0.03 93.50 JC9 | 1 0.01 93.51 JEE | 41 0.41 93.92 JET | 4 0.04 93.96 JH9 | 2 0.02 93.98 K10 | 55 0.55 94.53 K15 | 33 0.33 94.86 K20 | 15 0.15 95.01 K25 | 3 0.03 95.04 K30 | 2 0.02 95.06 LB1 | 1 0.01 95.07 LBD | 1 0.01 95.08 LCH | 1 0.01 95.09 LDS | 7 0.07 95.16 LLN | 4 0.04 95.20 LSB | 1 0.01 95.21 LTC | 9 0.09 95.30 LUV | 3 0.03 95.33 M95 | 1 0.01 95.34 MHC | 5 0.05 95.39 MHV | 21 0.21 95.60 MMX | 4 0.04 95.64 MON | 1 0.01 95.65 MRM | 5 0.05 95.70 MXV | 5 0.05 95.75 N95 | 1 0.01 95.76 P30 | 6 0.06 95.82 P42 | 1 0.01 95.83 P52 | 9 0.09 95.92 P62 | 16 0.16 96.08 PAR | 1 0.01 96.09 PCC | 3 0.03 96.12 R/V | 1 0.01 96.13 RAL | 1 0.01 96.14 RBT | 6 0.06 96.20 RC | 2 0.02 96.22 RMV | 10 0.10 96.32 RNG | 46 0.46 96.78 RUN | 5 0.05 96.83 RX | 1 0.01 96.84 S | 49 0.49 97.33 S/V | 5 0.05 97.38 S15 | 7 0.07 97.45 S60 | 1 0.01 97.46 S6M | 2 0.02 97.48 SAF | 1 0.01 97.49 SCR | 1 0.01 97.50 SCT | 9 0.09 97.59 SS | 18 0.18 97.77 T50 | 1 0.01 97.78 T80 | 1 0.01 97.79 TNS | 14 0.14 97.93 TRA | 1 0.01 97.94 UNI | 2 0.02 97.96 VAN | 137 1.37 99.33 VGN | 1 0.01 99.34 VOY | 1 0.01 99.35 VVN | 2 0.02 99.37 VWG | 2 0.02 99.39 W10 | 9 0.09 99.48 W15 | 7 0.07 99.55 W20 | 1 0.01 99.56 WAG | 8 0.08 99.64 WCN | 6 0.06 99.70 WHC | 2 0.02 99.72 WLC | 1 0.01 99.73 X44 | 9 0.09 99.82 XCB | 15 0.15 99.97 XCO | 3 0.03 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 18 Apr 2016