Crystal Reports use dataset multiple times

Message

   Is there any way to use a dataset from a report multiple times without having to re-run the query each time?

For example I have a dataset with the following columns:

WeekEnding
District 
State 
Branch 
NewMemberships 
ChangedMemberships
TotalMembershipActivity
YTD_NewMemberships
YTD_ChangedMemberships
YTD_TotalMembershipActivity
LevelDeep

I have 3 different reports from this required formatted as below:

-------
New Memberships

District             Week1       Week2       Week3     YTD_Ranking
Northern          12              4                3              19
Western           10              6               0              16
...
--------

-------
Changed Memberships

District             Week1       Week2       Week3     YTD_Ranking
Western          20               14               0              34
Eastern           15               16               2              33
...
--------

-------
% New Memberships

District             Week1       Week2       Week3     YTD_Ranking
Western          50%           13%           0%           58%
Eastern           17%           46%           19%         33%
...
--------

Question 1: Is there a simple way to get all these different result sets in one sub-report without having to re-run the query for each one?  

My problem is I have 70+ subreports over about 30-35 stored procs and while each stored proc only takes a few seconds to run in query analyzer my report takes about 30-40 min to run in business objects.

Thanks