I'm not sure I like the graph (and the whole report). It feels like it prices stopped growing, the representation in the chart would go down as it would be compared to a growing base number as time goes on.
A cumulative graph for both figures would be good. It would show that, yes wages and CPI are the same right now, but here's the cumulative difference since [whenever].
There's also a case for 2%, rather than 0, to be the baseline if that's the long term target. It's written that way, but not graphically represented as well.