You clearly didn't look at the graph. Look at it and it will be obvious what I meant.
If you pick 2008 as your starting point, you see a clear trend. Same if you pick 2009, 2010, 2011... Same if you pick an earlier year, say 2000, or 2001, or 2002. Basically if you pick any year other than 2005-2007 as your starting point, you see a clear trend. Out of all possible years you could pick, there are a whole lot that show a clear trend and just a few that don't. That's what cherry picking means. Out of all possible years they could have chosen, they chose the one that gives the result they wanted, even though almost all other choices give the opposite result.