Answer:
It would be the agent by definition.
Annual increase is $1,108.4
Explanation:
In 2016, average price was $27,258.6
In 2010, average price was $20,608
Average increase in 6 years = $27,258.6 - $20,608 = $6,650.6
Annual average increase = $6650.6/6 = $1,108.4