How do we get 6.5% China growth from these numbers?

Business Insider: The National Development and Reform Commission (NDRC) said Monday that rail freight volume in July dropped 5.8% from a year ago, to 263 million tons of cargo. For the first seven months, rail freight volume plunged 7.3% year-over-year.
But 2015 was already a terrible year.
Volume of rail freight traffic, as measured by metric tons of cargo transported and the distance traveled in kilometers, had plunged 13.4% from 2014, to 2.38 trillion ton-kilometers, according toStatista. And in 2014, rail freight volume had fallen 5.8% from 2013: