Splitting Up A Column In A Query

I have a table like this:

name | purchase amount | purchase date |
Joe--------20.00--------------12/1/06
Joe--------10.00--------------12/1/06
John-------10.00--------------1/15/06
Sam--------15.00--------------5/10/06
John-------20.00--------------11/1/06
Joe--------5.00---------------8/19/07
Sam--------5.00---------------10/8/07
Sam--------10.00--------------4/22/08
Sam--------15.00--------------4/22/08

and what I need is a query that will show name and the sum of purchase amount for specific years. Here is what it would look like:

name | purchase 2006 | purchase 2007 | purchase 2008
Joe 30.00 5.00 0
John 30.00 0 0
Sam 15.00 5.00 25.00