I have 3 columns, A=Date, B=Price, C=Grade in Excel. I want to calculate the average price of fuel for each year and an overall average of all years by grade. The data table looks like this Date | Price | Grade 2012-05-01 | $3.49 | Regular 2012-06-07 | $3.58 | Regular 2012-04-01 | $3.98 | Premium 2012-02-17 | $3.87 | Premium 2013-01-01 | $3.49 | Regular 2013-02-01 | $3.89 | Premium 2013-03-06 | $3.89 | Premium 2013-03-09 | $3.45 | Regular The output should look something like this: Year | Regular | Premium 2012 | 3.43 | 3.67 2013 | 3.45 | 3.73 All | 3.44 | 3.70