For the first five years, I will contribute $$6,000$ annually; after that, I will raise my payments to $$8,000$ annually for the next ten years. I will then up my annual payments to $$10,000$ over the next fifteen years.

My projected retirement funds, assuming a cautious $5\%$ yearly return are what?

Please show the amount that would be in the retirement savings at the end of Year $1,$ Year $5,$ Year $10$ and Year $15$ please.