"Statewide Emissions (tons/day, annual average)" 1975 1980 1985 1990 1995 2000 2005 2010 NOx 4761 4949 4950 4929 4207 3570 3007 2573 ROG 6839 6513 6170 4868 3908 3273 2810 2563 PM10 1864 2018 2004 2240 2177 2313 2466 2612 CO 43210 39701 40427 35062 26870 20591 15801 12944