RENTAL.DES city year pop enroll rent rnthsg tothsg avginc lenroll lpop lrent ltothsg lrnthsg lavginc clenroll clpop clrent cltothsg clrnthsg clavginc pctstu cpctstu y90 Obs: 128 1. city city label, 1 to 64 2. year 80 or 90 3. pop city population 4. enroll # college students enrolled 5. rent average rent 6. rnthsg renter occupied units 7. tothsg occupied housing units 8. avginc per capita income 9. lenroll log(enroll) 10. lpop log(pop) 11. lrent log(rent) 12. ltothsg log(tothsg) 13. lrnthsg log(rnthsg) 14. lavginc log(avginc) 15. clenroll change in lrent from 80 to 90 16. clpop change in lpop 17. clrent change in lrent 18. cltothsg change in ltothsg 19. clrnthsg change in lrnthsg 20. clavginc change in lavginc 21. pctstu percent of population students 22. cpctstu change in pctstu 23. y90 =1 if year == 90