ServiceDesk Plus Reports - keeping the history and see the evolution in a graph

ServiceDesk Plus Reports - keeping the history and see the evolution in a graph

Dear,
 
I'm new and have been assigned to create some reports within ServiceDesk Plus.
Can you please help me out with the following :
 
Quantity of new requests per day  - and keeping the history per day so you can see the evolution in a graph
(Y = Qty - X = Day)
 
Quantity of closed requests per day per technician -  and keeping the history per day so you can see the evolution in a graph (Y = Qty - X = Day)
 
Quantity of days a request stays open - and keeping the history per week so you can see the evolution in a graph (Y = Qty - X = Calendar Week)
 
Thanks for helping me out,
 
Heidi Bons

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