Reversal on the cards for DOW Jones?

Dow Jones monthly chart. We have an ascending curve (shown in blue) going through major turning points of this index. As the curve gets steeper the acceleration of this index to the upside increases. The index is now retesting the curve for the second time after trading below it from 2009. Very sharp gains as of late may be capped at 21000 which is also a cloned range resistance (shown in blue boxes), with distance between blue zones being equivalent. From the gradient of the curve lately we can see the speed of growth may not be sustainable and we now may see a pullback/reversal.