2003 Almanac (page 496 Table D-13 Mojave Desert Air Basin - Riverside County: Population and VMT Trends Mojave Desert Air Basin: Riverside County Surface Area = 3116 square miles Parameter 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 Population 11400 11800 12400 13100 13900 14800 15900 17100 18500 19800 20600 21300 21800 22200 22800 23600 24200 25000 25800 26900 Avg. Daily VMT/1000 82 86 115 123 134 146 161 169 245 258 272 289 305 322 337 351 362 373 390 403