If absolute values are a concern then why not replace the unit with % change? One could, assuming linear scale, reverse engineer that onto this plot anyway. Som

If absolute values are a concern then why not replace the unit with % change? One could, assuming linear scale, reverse engineer that onto this plot anyway. Some plots, of course, might stand better on their own without a y-axis scale (histogram distribution probably). To be honest, this plot is pretty useless either way; who cares about the trend it took downward since we have little or no context on what happened at any given point?