Appendix D "Plumas County, Mountain Counties" Table D-22 Parameter 1980 1985 1990 1995 2000 2005 2010 2015 2020 Population 17400 18600 19800 20800 20713 21143 21067 21025 20983 Avg. Daily VMT/1000 350 403 562 615 667 736 818 863 899