China GDP growth is expected to slow down further in 2017.

http://en.people.cn/n3/2017/0223/c90000-9181860.html

The expected growth rate for China is 6.64% in 2017 which is lower than 6.7% in 2016.  Therefore, world economies won't be doing better in 2017 than in 2016 because of lower growth and uncertain USA economic policies.