what would you all say is a solid book of business for a producer that has been in the business 4 years? i am in Mass. i am just curious on feedback. thanks

what do you all consider a solid year for a producer? i have been in the business for 4 years now and i am doing close to $500,000 new premium each year mostly commercial P&C small and medium business. i am an independent agent. i am just curious, i am also in Mass. thanks