Chapter 4 San Francisco Bay Area Air Basin  Table 4-23 "CO Emission Trends (tons/day, annual average)" Emission Source 1975 1980 1985 1990 1995 2000 2005 2010 2015 2020 All Sources 9056 8314 6991 5308 3901 2944 2021 1596 1340 1206 Stationary Sources 47 56 75 66 66 55 43 45 48 50 Area-wide Sources 114 121 129 149 149 154 161 163 169 174 On-Road Mobile 8391 7615 6209 4446 3077 2203 1338 914 631 460 Gasoline Vehicles 8381 7597 6182 4414 3050 2177 1312 889 611 444 Diesel Vehicles 9 18 27 32 27 26 25 25 20 16 Other Mobile 504 521 578 646 608 532 479 474 493 521 Gasoline Fuel 400 415 462 512 471 409 364 350 359 375 Diesel Fuel 57 57 64 79 82 71 62 63 68 74 Other Fuel 46 49 53 55 55 52 54 61 66 72