Person	Before	After
1	20 	19 
2	34 	17 
3	18 	23 
4	16 	14 
5	13 	16 
6	32 	32 
7	36 	28 
8	38 	26 
9	26 	27 
10	33 	37 
11	31 	28 
12	21 	20 
13	15 	17 
14	17 	14 
15	18 	16 
16	29 	22 
17	15 	24 
18	33 	36 
19	25 	22 
20	31 	16