Appendix D "Plumas County, Mountain Counties" Table D-22 Parameter 1980 1985 1990 1995 2000 2005 2010 2015 2020 Population 17400 18600 19779 20823 20712 21032 21824 22379 22934 Avg. Daily VMT/1000 327 362 489 528 562 682 757 875 1032