Has Education Cess on Income Tax significantly Improved the Literacy Rates in India?

Literacy rate is defined as the population of literates in the population aged 7 year and above.  Following are the literacy rates from the last three censuses conducted:

Year	1991				2001			2011
Literacy Rates
Sex	Male	Female	Persons	Male		Female	Persons	Male	Female	Persons
India	52	64	39	65		75	54	74	82	65
Andhra Pradesh	44	55	33	61		70	50	68	76	60
Arunachal Pradesh	42	52	30	54		64	44	67	74	60
Assam	53	62	43	63		71	55	73	79	67
Bihar	38	51	22	47		60	33	64	73	53
Chhatisgarh	43	58	28	65		77	52	71	81	61
Goa	76	84	67	82		88	75	87	93	82
Gujarat	61	73	49	69		80	58	79	87	71
Haryana	56	69	41	68		79	56	77	85	67
Himachal Pradesh	64	75	52	77		85	67	84	91	77
Jammu & Kashmir	-	-	-	56		67	43	69	78	58
Jharkhand	41	56	26	54		67	39	68	78	56
Karnataka	56	67	44	67		76	57	76	83	68
Kerala	90	94	86	91		94	88	94	96	92
Madhya Pradesh	45	59	29	64		76	50	71	81	60
Maharashtra	65	77	52	77		86	67	83	90	75
Manipur	60	72	48	71		80	61	80	86	73
Meghalaya	49	53	45	63		65	60	75	77	78
Mizoram	82	86	79	89		91	87	92	94	89
Nagaland	62	68	55	67		71	62	80	83	77
Odisha	49	63	35	63		75	51	73	82	64
Punjab	59	66	50	70		75	63	77	81	71
Rajasthan	39	55	20	60		76	44	67	81	53
Sikkim	57	66	47	69		76	60	82	87	76
Tamil Nadu	63	74	51	74		82	64	80	87	74
Tripura	60	71	50	73		81	65	88	92	83
Uttar Pradesh	41	55	24	56		69	42	70	79	59
Uttaranchal	58	73	42	72		83	60	80	88	71
West Bengal	58	68	47	69		77	60	77	83	71

Following are the increments in the literacy rates at the state level:

Year	2001 over 1991			2011 over 2001
Sex	Male	Female	Persons	Male	Female	Persons
India	13	11	15	9	7	11
Andhra Pradesh	17	15	17	7	6	10
Arunachal Pradesh	12	12	14	13	10	16
Assam	10	9	12	10	8	12
Bihar	9	9	11	17	13	20
Chhatisgarh	22	19	24	6	4	9
Goa	6	4	8	5	5	7
Gujarat	8	7	9	10	7	13
Haryana	12	10	15	9	6	11
Himachal Pradesh	13	10	15	7	6	10
Jammu & Kashmir				13	11	15
Jharkhand	13	11	13	14	11	17
Karnataka	11	9	13	9	7	11
Kerala	1	0	2	3	2	4
Madhya Pradesh	19	17	21	7	5	10
Maharashtra	12	9	15	6	4	8
Manipur	11	8	13	9	6	12
Meghalaya	14	12	15	12	12	18
Mizoram	7	5	8	3	3	2
Nagaland	5	3	7	13	12	15
Odisha	14	12	16	10	7	13
Punjab	11	9	13	7	6	8
Rajasthan	21	21	24	7	5	9
Sikkim	12	10	13	13	11	16
Tamil Nadu	11	8	13	6	5	10
Tripura	13	10	15	15	11	18
Uttar Pradesh	15	14	18	14	10	17
Uttaranchal	14	10	18	8	5	11
West Bengal	11	9	13	8	6	11

In case of whole of India, there was increase in literacy rates by 15 points over the period 2001-1991 and there was only 11 points over the next decade.  The highest increase of 24 points was observed in case of Chhatisgarh and Rajasthan states during the decade:2001-1991 and over the last decade the highest increase was of 20 points in case of Bihar.   Out of all the major states, the significant increase was observed only in case of Bihar only during the last decade.  For a few states of North-East, the increase was better seen in case of Tripura (18 points), Meghalaya (18 points), Uttar Pradesh (17 points) and Jharkhand (17 points).  One may easily observe that the increments over two decades for literacy rates show that there had been less improvement comparatively in the last decade even when Educational Cess on Income Tax was imposed for most of the Indian states.  Thus, this does indicate that whether cess or not, increase of literacy will have its own pace.