California Air Resources Board 2004 Almanac (web)								
Chapter 4	San Francisco Bay Area CO Emission Trends				Table 4-17			
"CO Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	8956	8293	7078	5241	3829	2785	2206	1773
Stationary Sources	49	58	76	69	60	41	51	55
Area-wide Sources	173	175	176	174	164	170	175	171
On-Road Mobile	8155	7477	6190	4310	2965	2029	1496	1105
   Gasoline Vehicles	8142	7454	6152	4270	2934	2001	1470	1082
   Diesel Vehicles	13	23	38	39	31	27	26	23
Other Mobile	580	583	636	688	640	545	484	442