Seattle City Light 2016 ANNUAL REPORT | Audited Financial Statements 80 THE CITY OF SEATTLE—CITY LIGHT DEPARTMENT OTHER INFORMATION (UNAUDITED) - 80 - INTEREST REQUIREMENTS AND PRINCIPAL REDEMPTION ON LONG-TERM DEBT Year Ending Fixed Rate Bonds Variable Rate Bonds December 31 ($ in millions) Principal Interest Subtotal Principal Interest Subtotal Total (a) 2017 $ 111.2 $ 93.8 $ 205.0 $ - $ 1.4 $ 1.4 $ 206.4 2018 111.8 88.5 200.3 - 1.4 1.4 201.7 2019 108.6 83.0 191.6 - 1.4 1.4 193.0 2020 107.8 77.5 185.3 - 1.4 1.4 186.7 2021 106.8 72.5 179.3 - 1.4 1.4 180.7 2022 106.3 67.1 173.4 - 1.4 1.4 174.8 2023 108.1 61.7 169.8 - 1.4 1.4 171.2 2024 111.2 56.2 167.4 - 1.4 1.4 168.8 2025 100.4 50.6 151.0 - 1.4 1.4 152.4 2026 93.6 45.8 139.4 3.3 1.4 4.7 144.1 2027 67.6 41.8 109.4 3.5 1.3 4.8 114.2 2028 68.9 38.5 107.4 3.5 1.3 4.8 112.2 2029 62.2 35.5 97.7 3.8 1.2 5.0 102.7 2030 47.0 32.9 79.9 3.9 1.2 5.1 85.0 2031 48.8 30.6 79.4 4.1 1.1 5.2 84.6 2032 50.7 28.3 79.0 4.2 1.1 5.3 84.3 2033 52.6 26.0 78.6 4.4 1.0 5.4 84.0 2034 54.8 23.4 78.2 4.6 0.9 5.5 83.7 2035 57.2 20.8 78.0 4.8 0.9 5.7 83.7 2036 64.8 18.1 82.9 5.0 0.7 5.7 88.6 2037 52.3 15.5 67.8 5.2 0.7 5.9 73.7 2038 54.2 13.1 67.3 5.3 0.7 6.0 73.3 2039 56.2 10.7 66.9 5.6 0.6 6.2 73.1 2040 58.3 8.2 66.5 5.8 0.5 6.3 72.8 2041 46.4 6.0 52.4 6.1 0.4 6.5 58.9 2042 31.6 4.4 36.0 6.3 0.3 6.6 42.6 2043 32.9 3.1 36.0 6.6 0.2 6.8 42.8 2044 23.3 1.7 25.0 6.9 0.1 7.0 32.0 2045 15.1 0.7 15.8 7.1 0.1 7.2 23.0 2046 7.4 0.3 7.7 - - - 7.7 Total $ 2,018.1 $ 1,056.3 $ 3,074.4 $ 100.0 $ 28.3 $ 128.3 $ 3,202.7 (a) Maximum debt service of $206.4 is due in 2017. See Note 9 Long-term debt. Note: All parity bonds of the Department are fixed rate bonds except the 2015B bonds which are variable rate bonds.