increase mine production

src/engine/objects/Mine.java

@@ -598,13 +598,13 @@ public class Mine extends AbstractGameObject {
         int amount = 0;
         switch(this.capSize){
             case 3:
-                amount = 1800000;
-                break;
-            case 5:
                 amount = 3000000;
                 break;
+            case 5:
+                amount = 4200000;
+                break;
             case 10:
-                amount = 6000000;
+                amount = 7200000;
                 break;
             case 20:
                 amount = 12000000;