Query: How many tons of goods were transported through Greece in 2007?
Context: The Port of Thessaloniki comes second with 15.8 million tons, followed by the Port of Piraeus, with 13.2 million tons, and the port of Eleusis, with 12.37 million tons. The total number of goods transported through Greece in 2010 amounted to 124.38 million tons, a considerable drop from the 164.3 million tons transported through the country in 2007. Since then, Piraeus has grown to become the Mediterranean's third-largest port thanks to heavy investment by Chinese logistics giant COSCO.