In 2010 Piraeus handled 513,319 TEUs, followed by Thessaloniki, which handled 273,282 TEUs. In the same year, 83.9 million people passed through Greece's ports, 12.7 million through the port of Paloukia in Salamis, another 12.7 through the port of Perama, 9.5 million through Piraeus and 2.7 million through Igoumenitsa. In 2013, Piraeus handled a record 3.16 million TEUs, the third-largest figure in the Mediterranean, of which 2.52 million were transported through Pier II, owned by COSCO and 644,000 were transported through Pier I, owned by the Greek state.

Answer this question, if possible (if impossible, reply "unanswerable"): How many TEUs did Piraeus handle in 2010?
513,319