YEAR	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual 24-hr Avg.
1991												22595
1992	19953	21453	22383	23595	24224	26642	27779	28300	24621	23327	22443	23328	24080
1993	20296	22531	23891	25584	25691	27517	29702	29664	26487	25031	23778	25352	25480
1994	22503	23262	24953	26673	27964	30205	32444	34743	31095	28585	24725	25932	27789
1995	22771	23655	25479	26722	28052	28635	29229	30110	28799	27153		25440
1996	21508	24279	25735	25980	27263	28733	29347	29969	27159	26155	23761	25315	26267
1997	23560	24852	25230	26982	28179	28889	29679	30346	27075	26405	25808	26766	26981
1998	23658	25815	26908	27682	29711	30636
1999	25299	26173	27549	28527	29782	31216	31900	32711	29705	28926	27581	28365	28978
2000	25206	27034	27895	28833	29814	30633	31367	32319	30563	33917	30545	28303	29702
2001	25908	27564	30890	33357	33094	31595	33789	34873	31677	30445	28313	28271	30815
2002	25949	27411	27620	29917	31619	31493	33551	34379	29733	29160	28152	28592	29798
2003	26346	27980	27891	29467	31038	33163	34863	36299	31770	31158	28624	31104	30809
2004	27575	30014	31440	35419	36101	35191	35809	35645	32683	31455	30663	31885	32823
2005	28027	30168	33297	36265	37503	38442	38453	38045	33944	33015	31690	32669	34293
2006	29987	31919	33223	33636	34371	36420	36926	38012	32145	30563	28967	29734	32992
2007	27134	29105	30615	30827	33073	33858	34008	34777	30427	29717	28451	28169	30847
2008	25845	29018	28988

This Data is also available in the following forms: Comma Delimited , Tab Delimited and Space Delimited.
Right-Click and 'Save Target As' to download a copy.