California Air Resources Board 2006 Almanac (web)										
Chapter 4	San Francisco Bay Area Air Basin 						Table 4-20			
"Directly Emitted PM2.5 Emission Trends (tons/day, annual average)"										
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010	2015	2020
All Sources	87	85	87	88	86	93	91	94	99	103
Stationary Sources	28	22	16	14	16	16	13	14	14	15
Area-wide Sources	41	44	48	50	52	59	60	64	67	71
On-Road Mobile	5	7	9	9	7	6	7	7	7	7
   Gasoline Vehicles	3	3	2	3	3	3	4	5	5	6
   Diesel Vehicles	2	4	7	7	4	3	3	2	2	1
Other Mobile	13	13	13	15	12	11	11	10	10	10
   Gasoline Fuel	1	1	1	1	1	1	2	2	2	2
   Diesel Fuel	9	9	9	10	8	8	8	6	6	5
   Other Fuel	3	3	3	4	3	2	2	2	2	3