_id	age__end_of_academic_year_	No of Pupils
1	4	32
2	5	89
3	6	249
4	7	377
5	8	391
6	9	409
7	10	542
8	11	637
9	12	663
10	13	705
11	14	855
12	15	970
13	16	937
14	17	892
15	18	723
16	19	351
17	20	57
18	Unkown	190
19	Total	9069