The Swede netted a brace in tonight's 4-0 victory over Chievo and burst through his personal century mark.
"We are playing well and have great confidence in our abilities," he told Sky Sport Italia.
"After the break we controlled the game by keeping possession, as we had won it in the first half. Now we must continue along this path.
"I am very happy to have scored over 100 goals in Italy. I've improved a lot in front of the net and for that I must thank this country."