California Air Resources Board 2004 Almanac (web)								
Chapter 4	San Francisco Bay Area NOx Emission Trends				Table 4-11			
"NOx Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	975	968	905	876	741	694	542	453
Stationary Sources	231	208	136	132	103	145	73	77
Area-wide Sources	14	15	16	19	20	20	20	20
On-Road Mobile	552	570	566	524	437	352	286	217
   Gasoline Vehicles	497	478	417	348	294	208	155	114
   Diesel Vehicles	55	92	149	176	142	144	131	103
Other Mobile	178	175	186	200	182	177	163	139