The chart and table represent Columbia River DART data query requests made from 1998 through the present. Columbia Basin Research staff queries and other extraneous queries have been removed from the final counts.

Comparison of DART Queries for 1998 - 2012 by month

	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	Usage Change 2012/2011
January	3394	5791	8846	11031	11766	9192	9607	9707	10039	10873	16289	17150	24902	62839	29646	47 %
February	3684	9990	10819	11111	11229	16687	15520	12254	12016	13886	17731	18865	27843	28324	30680	108 %
March	5450	13509	16191	25795	29055	28332	37216	29986	25653	25229	32519	37908	48957	41323	44117	106 %
April	9979	15110	27594	62102	70968	61130	85865	67563	41794	45071	66024	62659	91693	63896	63394	99 %
May	10307	21048	33703	46818	75532	47215	64036	72992	73692	53886	87591	111838	92722	93381	92980	99 %
June	9567	24017	27955	32442	38512	33933	40280	47429	50845	38021	68514	67877	70290	69547	67598	97 %
July	9060	25565	28103	35234	37507	31645	30862	37172	32031	35388	59524	55780	64289	59398	57414	96 %
August	14004	30790	31308	44644	36090	31926	39793	43961	41875	45377	50404	72692	59919	60276	54308	90 %
September	18469	31694	35478	48617	37716	53175	53891	51778	51662	54587	58884	70221	67135	59417	58476	98 %
October	13661	21303	24347	33924	24168	28211	25493	29760	31915	36902	34124	46028	41294	41280	46506	112 %
November	7760	12738	13452	17570	11198	12139	13295	14302	16802	19130	20988	28772	27112	32168	35881	111 %
December	5389	11780	10025	12220	8087	8998	9215	8699	9263	14278	16770	23847	22715	25767	32289	125 %
Total	110724	223335	267821	381508	391828	362583	425073	425603	397587	392628	529362	613637	638871	637616	613289	96 %
	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	Usage Change 2012/2011