Discounts for Multi-year Domain Purchases/Renewals

We have discounted prices for multi-year domain renewals and new purchases: 1 year - 1st yr. costs $19.95 - $19.95 total for 1 years 2 year - 2nd yr. costs $17.95 - $37.90 total for 2 years 3 year - 3rd yr. costs $16.95 - $54.85 total for 3 years 4 year - 4th yr. costs $15.95 - $70.80 total for 4 years 5 year - 5th yr. costs $14.95 - $85.75 total for 5 years 6 year - 6th yr. costs $13.95 - $99.70 total for 6 years 7 year - 7th yr. costs $12.95 - $112.65 total for 7 years 8 year - 8th yr. costs $11.95 - $124.60 total for 8 years 9 year - 9th yr. costs $10.95 - $135.55 total for 9 years 10 year - 10th yr. costs $9.95 - $145.50 total for 10 years