2002 Almanac (page 485) Table D-49 Sacramento Valley Air Basin - Yolo County: Population and VMT Trends Sacramento Valley Air Basin: Yolo County Surface Area = 1030 square miles Parameter 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Population 119100 121800 123300 124600 128000 129500 132800 137700 142000 146600 150400 152700 153300 154700 157700 159600 162400 164100 167600 170900 Avg. Daily VMT/1000 2259 2338 2519 2691 3114 3326 3622 3855 4076 3624 3709 3705 3827 3854 3929 4040 4062 4286 4412 4482