In the first five months (January-May), 259.3 million tons of freight was moved to and from the city-state, which increased 5.4% year on year. Containerized shipments swelled 4.3% to 141.6 million tons. They were robust in terms of TEU as well, growing 5.9% to 13.3 million TEUs.
http://www.jiffa.or.jp/en/news/entry-4787.html