Table 12. Chlamydia Among Women 15-25 Years of Age - Reported Cases and Rates of Reported Cases by Age, United States, 2009-2013

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Year	Age	Cases	Rate per 100,000 Population
2009	15	25,118	1,246.0
	16	47,662	2,316.9
	17	72,782	3,466.4
	18	98,822	4,626.6
	19	103,213	4,738.9
	20	92,398	4,384.4
	21	78,650	3,775.1
	22	64,631	3,122.6
	23	53,362	2,558.1
	24	43,905	2,091.4
	25	35,465	1,720.0
2010	15	25,432	1,231.1
	16	48,233	2,296.7
	17	73,089	3,428.0
	18	100,399	4,573.2
	19	107,099	4,774.3
	20	99,175	4,485.9
	21	84,674	3,973.3
	22	69,755	3,342.6
	23	56,264	2,734.2
	24	46,126	2,212.0
	25	37,155	1,768.4
2011	15	25,792	1,272.2
	16	48,942	2,368.5
	17	75,143	3,569.5
	18	104,501	4,902.9
	19	112,440	5,122.9
	20	107,958	4,804.7
	21	95,195	4,236.2
	22	77,799	3,605.2
	23	62,339	2,953.3
	24	50,243	2,417.5
	25	40,711	1,943.9
2012	15	24,453	1,207.2
	16	45,041	2,212.8
	17	69,465	3,346.4
	18	99,459	4,699.5
	19	108,012	5,036.6
	20	104,425	4,727.7
	21	96,456	4,266.0
	22	81,292	3,593.9
	23	65,473	3,011.7
	24	52,983	2,489.8
	25	41,911	1,999.6
2013	15	21,680	1,070.3
	16	40,528	1,991.1
	17	61,666	2,970.7
	18	90,330	4,268.2
	19	102,234	4,767.2
	20	99,556	4,507.3
	21	93,713	4,144.7
	22	81,884	3,620.0
	23	68,600	3,155.5
	24	55,792	2,621.8
	25	44,330	2,115.0

NOTE: This table should be used only for age comparisons. Cases reported with unknown sex are not included in this table.