Future of SPY based on monthly bars Bear Market on horizon?

This is SPY plotted in monthly bars since 1994 to 2022. I have used a Schiff Pitchfork for Median line analysis. All prices should oscillate around median price until trend breaks. The current trend has held since 2010 and prices have been arcing away from median since. However, rate of growth is slowing and could turn negative in next couple of years. Interesting taking pitchfork pivot in 2009 or 2010 gives similar results