The 22-year-old's season started badly when he was sent off in United's second game at Portsmouth, but he has scored twice in four games since returning.
"Twenty-three goals is a lot for a winger," said Ronaldo. "To score that number made it a special season indeed.
"But I feel I can do better, or at least equal last year and I will be trying hard to do exactly that."
Ronaldo received a three-match ban after being shown a red card at Pompey for aiming a head butt at Richard Hughes.
But the former Sporting Lisbon star, who has yet to finish on the losing side for United this season, has scored winning goals at both Sporting and Birmingham since his return from suspension.
Meanwhile, Ronaldo appeared at the launch of his new book wearing a pair of oversize designer sunglasses to protect the eye injury he suffered in Tuesday's win over AS Roma.
Manager Sir Alex Ferguson had suggested Ronaldo felt he was the victim of a deliberate elbow by Roma substitute Mirko Vucinic.
But Ronaldo said: "It wasn't intentional. I don't want to look like this but these things happen in football."