The people who live on Shangri-La Island consume only rice and fish. Last year, which was the reference base year, the price of rice was $3 a pound, the price of fish was $3 a pound, and the average urban household spent $12 on rice and $15 on fish. This year, the price of rice is $5 a pound and the price of fish is $9 a pound. What is the CPI in the current year?