_id	Type of Posts	unsafe_12_13	unsafe_13_14	unsafe_14_15	unsafe_15_16	unsafe_16_17	unsafe_17_18	unsafe_18_19	unsafe_19_20	unsafe_20_21	unsafe_21_22	unsafe_22_23
1	SNA	10,503	10,671	11,174	11,984	13,006	14,063	15,030	16,125	17,117	18,113	19,481
2	Special Education Teaching	–	–	–	–	–	13,395	13,436	13,529	13,620	13,765	14,396
3	Special school teachers	1,078	1,060	1,135	1,159	11,979	1,205	1,223	1,231	1,240	1,282	1,340
4	Special class teachers	695	823	956	1,136	1,304	1,480	1,663	1,865	2,103	2,456	2,919