Mês	Índice Acumulado
11/2018	4,1399
10/2018	4,1292
9/2018	4,0566
8/2018	4,0292
7/2018	4,0115
6/2018	3,9530
5/2018	3,8892
4/2018	3,8534
3/2018	3,8319
2/2018	3,8262
1/2018	3,8041
12/2017	3,7762