California Air Resources Board 2004 Almanac (web)								
Chapter 4	South Coast NOx Emission Trends		Table 4-9					
"NOx Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	1724	1642	1742	1565	1341	1182	968	762
Stationary Sources	328	292	255	164	131	91	68	65
Area-wide Sources	31	34	35	28	27	30	32	27
On-Road Mobile	1026	954	1094	1000	869	751	581	426
   Gasoline Vehicles	921	768	788	700	594	432	270	186
   Diesel Vehicles	105	186	306	299	275	319	311	239
Other Mobile	339	362	358	373	314	309	287	243