Price changes of Gino's Pizza's large sized pizzas from 1995 to 1999 to 2003.

	Year 1995	Year 1999	Year 2003
Spring	$14	$16	$18
Summer	$15	$17	$19
Fall	$13	$15	$17
Winter	$12	$14	$16
Overall Avg. Between Years	$15.5

• There is a $2 price increase every year.
• Summer prices are the most expensive.
• Winter prices are the least expensive.