California Air Resources Board 2006 Almanac (web)										
Chapter 4	San Francisco Bay Area Air Basin 						Table 4-25			
"NOx Emission Trends (tons/day, annual average)"										
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020
All Sources	979	972	909	878	765	658	547	465	389	352
Stationary Sources	235	212	141	131	114	90	55	57	59	61
Area-wide Sources	13	14	15	19	20	20	20	20	21	21
On-Road Mobile	552	570	566	524	437	352	286	217	146	101
   Gasoline Vehicles	497	478	417	348	294	208	155	114	78	54
   Diesel Vehicles	55	92	149	176	142	144	131	103	68	47
Other Mobile	178	175	187	203	195	196	186	171	163	169
   Gasoline Fuel	8	8	9	11	12	13	13	10	10	10
   Diesel Fuel	146	142	151	161	148	144	131	110	96	91
   Other Fuel	24	26	28	32	35	40	43	50	58	68