1 Over the past 5 years, DL Insulation has paid annual dividends of $1.40, $1.55, $1.70, $1.73, and $1.77 per share. What is the geometric average dividend growth rate for this period?

2 Over the past 4 years, a local firm has paid annual dividends of $1.62, $1.65, $1.70, and $1.73. What is the arithmetic average dividend growth rate?