Chapter 4 South Coast Air Basin Table 4-12 "NOx Emission Trends (tons/day, annual average)" Emission Source 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 All Sources 1693 1532 1564 1561 1335 1180 999 755 600 493 Stationary Sources 306 265 229 181 130 112 60 55 51 51 Area-wide Sources 60 54 49 42 35 30 27 23 22 23 On-Road Mobile 998 880 955 953 831 692 586 400 285 204 Gasoline Vehicles 927 777 796 725 616 455 295 178 127 92 Diesel Vehicles 71 103 159 228 215 237 291 222 158 111 Other Mobile 329 333 331 385 338 345 327 276 241 216 Gasoline Fuel 27 27 29 32 28 29 28 24 22 21 Diesel Fuel 268 271 267 314 265 266 241 194 155 123 Other Fuel 34 35 35 39 45 51 58 58 64 72