Performance: Optimise Summary Page by reporter table

After:
DB Unique queries executed: 46
DB Total queries executed: 46
DB Total query execution time: 2.3407 seconds

Before:
DB Unique queries executed: 55
DB Total queries executed: 55
DB Total query execution time: 4.445 seconds
Do we need to maintain a total vs. calculate it by adding the 3 other numbers when needed?