10% increase every year means around 160% increase in 10 years, 570% increase in 20 years, 1640% increase in 30 years and 4420% in 40 years. That seems a bit u

10% increase every year means around 160% increase in 10 years, 570% increase in 20 years, 1640% increase in 30 years and 4420% in 40 years. That seems a bit unrealistic to me.