Estimation of number of SAP programs and factor deciding it

There is no official table as you quoted in your example as there is a number of factors on which estimation depends, for example:

• a) Programmer experience 
• b) Complexity of code 
• c) Interaction with other interfaces 
• d) Your standard and best practices

You would require building your own formula/technique based on various factors and map it with current estimation to get more accuracy.