Going off the diagram hes wrong, eyeing it it looks as though the fastest rise (ie the steepest upward trend) is actually the period between 2014 and 2016 or possibly just into 2016.
From a wider point of view the graph shows that wages have stagnated badly since the brexit vote. 16-18 shows no overall rise. Which makes him look stupid considering his other views and positions taken publicly.
From an even wider one, 8 of the 10 years shown are under conservative governments and, despite the fact it was on the down before they came to power, we're still not back to the level we were before Cameron became PM in 2010.
Looking at the "current level" dashed line it looks like we're currently at 2011 level.
Basically this is the sort of graph that a Conservative MP should be avoiding publicising at all costs, since it shows they've done the square root of nothing to improve wages since getting power. Instead he's made himself look a tit by showing it off and claiming it as a positive.