Parameter	1980	1985	1990	1995	2000	2005	2010	2015	2020
Population	23782000	26402401	29828496	31711849	34095209	36896218	39135677	41635800	44135923
Avg. Daily VMT/1000	403567	538319	691049	733629	799848	955234	958079	1033400	1104522