Sorting Dates Column and calculating MTD, YTD

Hi guys,

What I'm looking for is good ole fashioned formula-help on this one, no fancy-macro required unless you're feelin' generous hah.

So Column 1 I've got dates, need to sort through that and calculate Year-to-date and Month-to-Date values. These are both Sums of the cells....
YTD = Sum of all cells with most recent yr, in this case 2007
MTD = Sum of all cells in Column B for most recent month, Feb2007 here.

I've listed the desired solution for YTD and MTD on the sheet as well

(I'm guessing the solution will have something to do with SUMPRODUCT?)
Thanks in advance, i know its gonna be peanuts for some of you pros here