"NOX Emission Trends (tons/day, annual average)"								
Emission Source	1975	1980	1985	1990	1995	2000	2005	2010
All Sources	818	808	755	756	659	558	489	411
Stationary Sources	237	215	143	137	111	89	89	90
Area-wide Sources	15	17	15	17	18	17	16	17
On-Road Mobile	393	412	419	411	349	274	222	169
   Gasoline Vehicles	363	362	326	290	251	186	146	107
   Diesel Vehicles	30	50	93	121	98	87	75	62
Other Mobile	173	164	178	191	182	178	161	135