California Air Resources Board 2004 Almanac (web) San Luis Obispo County Appendix D South Central Coast Air Basin Population and VMT Table D-74 Parameter 1980 1985 1990 1995 2000 2005 2010 Population 156600 184200 217800 230200 247700 287000 323100 Avg. Daily VMT/1000 2649 3735 5200 5418 5974 6668 7533