The market basket used to calculate the CPI in Aquilonia is 4 loaves of bread, 6 gallons of milk, 2 shirts, and 2 pairs of pants. In 2005, bread cost $1.00 per loaf, milk cost $1.50 per gallon, shirts cost $6.00 each, and pants cost $10.00 per pair. In 2006, bread cost $1.50 per loaf, milk cost $2.00 per gallon, shirts cost $7.00 each, and pants cost $12.00 per pair. Using 2005 as the base year, what was Aquilonia's inflation rate in 2006?