California Air Resources Board 2004 Almanac (web)								
Chapter 3	Statewide NOx Emission Trends							Table 3-7
"NOx Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	4815	4986	4949	4850	4142	3663	3040	2519
Stationary Sources	1226	1247	1004	881	703	627	511	531
Area-wide Sources	83	88	91	87	87	90	93	89
On-Road Mobile	2435	2459	2721	2675	2301	1915	1518	1127
   Gasoline Vehicles	2149	1975	1936	1789	1535	1113	757	536
   Diesel Vehicles	286	484	784	885	766	802	761	590
Other Mobile	1072	1192	1133	1207	1052	1031	918	772