Monthly statistics including data for March 2016 have been published, so the complete data for the 1st quarter of 2016 is available.
The weight of transported cargo fell in March 2016 by 5,2%, which is the biggest decrease this year. Meanwhile, transport performance fell by 1,1%. Taking the 1st quarter of 2016 into consideration, weight of transported cargo decreased by 0,8% and transport performance rose by 0,5%. Poor performance of freight transport was mainly due to decreased level of transport of coal.
You will find data on freight transport here.