"NOX Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	1850	1780	1923	1780	1473	1208	942	771
Stationary Sources	375	351	313	180	124	105	78	78
Area-wide Sources	33	35	38	31	32	39	41	43
On-Road Mobile	1090	1017	1207	1197	1009	761	545	416
   Gasoline Vehicles	1005	858	928	832	730	539	343	240
   Diesel Vehicles	85	159	279	366	279	222	202	176
Other Mobile	353	377	365	372	308	304	278	235