Question on the S&P 500: can we expect it to continue to give us the positive annualized returns it has given us every year? For how long?

I see the S&P 500 and it has this track record of increasing exponentially to the point that the graph looks like that one imaginary thought that middle schoolers, or at least I had but subconsciously never have believed, have of “does a graph become a circle if it continues to increase exponentially.” It doesn’t it just becomes a straight line going up.

The S&P 500 looks like that. It looks like it’s almost becoming a straight line that is just going to go up.

Can we actually expect this or at least to continue to see positive gains as we have in previous year or will it eventually become one of those stocks that stays within a range?