California Air Resources Board 2009 Almanac (web) Chapter 4 " Basin Total, Sacramento Valley" Table 4-54 Parameter 1980 1985 1990 1995 2000 2005 2010 2015 2020 Population 1500924 1688217 1977544 2155490 2352967 2627717 2817815 3056168.5 3294522 Avg. Daily VMT/1000 30025 38728 50471 54826 57268 71433 73601 82374 89914