Passage: On 11 January 2011, Sampdoria confirmed Icardi had signed with the club on loan until the end of the season. After a successful six-month loan for la Samp, scoring 13 goals in 19 games with the Primavera team, the Italian side utilised the option to buy Icardi for €400,000 in July 2011, signing a three-year deal. In 2011–12 season, he scored 19 goals in the reserve league Group A, as the joint-third topscorer of the league along with Gonzalo Barreto of Group C.

Question: How many goals did Icardi score on loan for Sampdoria?
13