[Solved] Growth adjustment factor for actuarial method

The addition of ability for user to set a simple growth adjustment factor would be beneficial to the actuarial method.

User could set growth to increase or decrease yearly amortized spending amount in order to, for instance,

• You want to spend a little more toward the beginning of retirement when you are healthy to enjoy it, thereby taking out less when you are old.
• You want to take out a little less at the beginning of retirement in order to ensure you'll have a bit more toward end of life when expenses increase.
• The "natural" actuarial withdrawal shape in Pralana doesn't quite match your preference, and you want to flatten it.

Here's a spreadsheet to show what I'm talking about.

Simple tweak to the discount rate make the actuarial spending routine more powerful.