Rookie kickers have made 86.7 percent of field goal attempts over the past five seasons. Veteran kickers have made 83 percent over the same period.That is something to keep in mind when wondering what veteran kicker the San Francisco 49ers might pursue after releasing David Akers this week.2008-2012 Field Goal PercentagesWhile the 49ers likely will sign a veteran, they should consider using one of their league-high 12 draft choices -- a total expected to rise when the NFL distributes compensatory selections -- for the best rookie kicker they can find.