In September 1997, the average cost for 1 gallon of home heating

In September 1997, the average cost for 1 gallon of home heating oil in New York City was $1.192 per gallon. By September 2008, it had risen to $4.173 per gallon. (By March 2016, it was down to $2.30.) What was the percent increase in the 11 years from 1997 to 2008? Round to the nearest percent.