pre_text: The following are the significant assumptions adopted in measuring the Company’s pension and other benefit obligations: For certain Canadian post-retirement plans the above trend rates are applicable for 2019 to 2024 which will increase linearly to 4.75% in 2029 and grading down to an ultimate rate of 3.57% per annum in 2040 and thereafter.
table: As at December 31, Pension 2019 Other 2019 Pension 2018 Other 2018
table: Actuarial benefit obligation
table: Discount rate 3.20% 2.95% to 3.20% 3.80% 3.80% to 4.00%
table: Benefit costs for the year ended
table: Discount rate 3.90% 3.90% to 4.00% 3.60% 3.25% to 3.60%
table: Future salary growth 2.50% N/A 2.50% N/A
table: Health care cost trend rate N/A 3.49% to 5.49% N/A 4.50%
table: Other medical trend rates N/A 4.00% to 4.56% N/A 4.50%
question: Analyse this data from a financial earnings document. What is the total pension discount rate for actuarial benefit obligation for 2018 and 2019?