diff --git a/EvoCalculator.Core.FinanceFormulas/Interpolation.cs b/EvoCalculator.Core.FinanceFormulas/Interpolation.cs
index bb59faa..9fcda89 100644
--- a/EvoCalculator.Core.FinanceFormulas/Interpolation.cs
+++ b/EvoCalculator.Core.FinanceFormulas/Interpolation.cs
@@ -2,10 +2,10 @@
 
 public class Interpolation
 {
-    private int[] values1 = { 7, 13, 24, 36, 48, 60 };
-    private int[] percentages1 = { 65, 56, 45, 35, 31, 0 };
-    private int[] percentages2 = { 45, 37, 32, 26, 11, 0 };
-    private int[] percentages3 = { 35, 30, 27, 24, 10, 0 };
+    private int[] values1 = { 7, 12, 18, 24, 36, 60 };
+    private int[] percentages1 = { 60, 50, 40, 29, 25, 25 };
+    private int[] percentages2 = { 45, 35, 30, 26, 25, 25 };
+    private int[] percentages3 = { 35, 30, 27, 25, 25, 25 };
 
     private int[] values;
     private int[] percentages;