Two years ago Fred bought a house for $**300,000**.

Now it's worth $**500,000**, based on recent similar sales in the area.

Fred's residential property has an expected total return of **8**% pa.

He rents his house out for $**2,000** per month, paid in advance. Every 12 months he plans to increase the rental payments.

The present value of 12 months of rental payments is $**23,173.86**.

The future value of 12 months of rental payments one year ahead is $**25,027.77**.

What is the expected annual growth rate of the rental payments? In other words, by what percentage increase will Fred have to raise the monthly rent by each year to sustain the expected annual total return of 8%?