Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1990,1539,1772,1899,2035,2431,2836,3391,3314,2855,2532,2072,1789,2376,
1991,1665,1791,1790,1981,2272,2869,3414,3271,2765,2545,1960,1858,2352,
1992,1708,1826,2029,2079,2397,2823,3361,3085,2754,2606,2049,1850,2390,
1993,1583,1741,1967,2082,2534,2874,3513,3222,3120,2788,2236,2131,2487,
1994,1913,1899,2160,2280,2637,3130,3711,3333,3183,2897,2238,2238,2640,
1995,2052,2146,2203,2344,2563,,,3349,3252,3037,2518,2395,,
1996,2005,2159,2375,2588,2862,3429,3956,3828,3397,3239,2602,2322,2897,
1997,2128,2337,2631,2671,3038,3627,4308,4122,3793,,2607,2629,,
1998,2322,2548,2605,2853,3142,3675,4235,4069,3777,3332,2834,2765,3180,
1999,2496,2587,2770,2874,3237,3773,4431,4099,3950,3630,2988,2862,3308,
2000,2558,2796,2838,3095,3448,3954,4454,4256,4039,3809,3076,3071,3450,
2001,2784,2921,3136,3346,3695,4074,4633,4497,,3665,3286,2996,,
2002,2889,2956,3074,3326,3651,4154,4585,4358,3978,3905,3270,3205,3613,
2003,2962,2996,3076,3299,3685,4184,4635,4526,4063,3984,3324,3278,3668,
2004,2966,3013,3207,3506,3715,4277,4737,4433,4313,4148,3558,3466,3778,
2005,3117,3249,3393,3627,3799,4267,4802,4478,4166,3910,3502,3376,3807,
2006,3199,3210,3304,3683,4005,4466,4833,4572,4389,4142,3608,3524,3911,
2007,3236,3320,3527,3766,4095,4458,4769,4615,4137,4052,3533,3339,3904,
2008,3025,3198,3180,3319,3583,3863,4287,4211,3812,3621,3146,3069,3526,
2009,2793,2815,2852,3171,3440,3963,4809,4044,3818,3395,2883,2822,3400,
2010,2616,2677,2725,2957,3123,3500,4046,3820,3566,3230,2641,2651,3129,
2011,2513,2528,2508,2660,2897,3340,3901,3660,3452,3149,2667,2588,2989,
2012,2361,2476,2481,2725,3015,,,,,,,,,
2013,,,,,,,,,,3159,2634,2608,,
2014,2368,2466,2610,2740,3229,3447,3938,3660,3463,3368,2714,2768,3064,
2015,2559,2748,2925,3058,3343,3816,4057,3910,3722,3539,2910,2841,3286,
2016,2694,2813,2972,3233,3540,3970,4395,4085,3850,3642,3196,2905,3441,
2017,2649,2853,3054,3376,3737,4160,4537,4537,4099,3852,3343,3180,3615,
2018,2847,2965,3041,3423,3830,4389,4715,4418,4166,3892,3343,3145,3681,
2019,3031,3066,3233,3521,3810,4596,4956,4866,4330,4052,3471,3274,3851,
2020,3083,3281,2803,2260,3515,4339,4746,4658,4535,4266,3426,3263,3681,
2021,3198,3416,3657,3803,4247,4899,5106,4825,4686,4284,3812,3714,4137,
2022,3310,3517,3619,3841,4216,4752,5001,4942,4729,4596,3759,3525,4151,
2023,3591,3667,3799,4071,4504,5196,5365,5200,5040,4864,4159,3862,4443,
2024,3458,3794,3892, , , , , , , , , , ,