Case of the Age

Hi Friends,

                 I want to find out the age of the case every week. For example: I have in my table like below

Create table #Case
(
caseopened date,
caseclosed date
)
insert into #Case
values ('2012-01-04','2012-02-16') 

SElect * from #case

caseopened 2012-01-04  caseclosed 2012-02-16. So Now from datedimension or from calendar i can find that 2012-01-08
2012-01-15,2012-01-22,2012-01-29,2012-02-05,2012-02-12,2012-02-19 are weeks between that above mentioned case. Now i want to find out the age of the case for every week. 

like for 2012-01-08 age is 4 for 2012-01-15 age is 11, etc . Any help is highly appreciated. I wanted to present this in ssrs chart where x axis is weekendingsunday and y axis is age. 

Thanks.