Question : Trying to Sum of Rows Specified within a Date Range (by Year)

I am trying to sum a row of numbers that are categorized under a certain range.  My data looks something like:


                       12/3/09  1/14/10   7/21/10  12/8/10      2/14/11  
Category A        $ 1.00   $ 8.00    $ 7.00     $ 8.00       $ 1.00
Category B       $11.00   $ 2.00    $ 4.00     $15.00      $11.00
Category C        $ 7.00   $ 3.00    $ 7.00     $ 5.00       $ 8.00
Category D        $ 1.00   $ 8.00    $ 3.00     $ 4.00       $ 7.00
Category E        $ 3.00   $ 9.00    $ 2.00      $ 3.00       $ 5.00
Category F        $ 4.00   $ 8.00   $12.00      $ 1.00      $10.00


Also, the user enters a date into another cell, such as "4/12/10".

Challenge: I want to write a formula that would sum all amounts within that year based on the date entered. Specifically, if the user enters 4/12/10, then the formula would sum all amounts in the columns (in this example, the 2nd, 3rd, and 4th) that are within 2010 (1/1/10 to 12/31/10).  If the user enters 8/18/09, it would add all amounts in the columns that are in 2009 (1/1/09 to 12/31/2009).

Can anyone help with the formula?  I have tried HLOOKUP and SUMIF but I am stuck on how to take a date like 4/12/10 and restrict it to the year (2010).

Thanks for your help
(ps sorry I just saw this was posted in the MS Access zone and I cannot delete it)

Answer : Trying to Sum of Rows Specified within a Date Range (by Year)

Assuming that your table is in cells A1:F8, with that date in cell i1, you can use the following formula in cell G2
=SUMPRODUCT((YEAR($B$1:$F$1)=YEAR($I$1))*B2:F2)

See attached file.

Thomas