Chinese share of world exports may decrease after rising for 16 years in line. The country's share of world's exports may shrink due to weaker global demand and stronger yuan. Bleak economic outlook in the EU and US might increase protectionism against China's products, said Zhang Qizi, from the Institute of Economics at the Chinese Academy of Social Sciences. Country's trade surplus is likely to narrow from $182 billion last year to $150 billion in 2011, he added.