1,number,price
2,1,-2.025
3,2,-1.775
4,3,-1.525
5,4,-1.275
6,5,-1.025
7,6,-0.775
8,7,-0.525
9,8,-0.275
10,9,-0.0249999999999999
11,10,0.225
12,11,0.475
13,12,0.725
14,13,0.975
15,14,1.225
16,15,1.475
17,16,1.725
18,17,1.975