| Prediction Data 1 | Predication Data 2 | ||||
| year | rate(in cents) | y = 1E-250x76.173 | Error Measure 1 | y = 3E-254x77.242 | Error Measure 2 |
| 1919 | 2 | 1.2 | 0.6 | 1.2 | 0.7 |
| 1932 | 3 | 2.0 | 1.0 | 2.0 | 1.1 |
| 1958 | 4 | 5.6 | 2.5 | 5.5 | 2.4 |
| 1963 | 5 | 6.8 | 3.2 | 6.7 | 3.0 |
| 1968 | 6 | 8.2 | 5.0 | 8.2 | 4.9 |
| 1971 | 8 | 9.3 | 1.6 | 9.2 | 1.5 |
| 1974 | 10 | 10.4 | 0.1 | 10.4 | 0.1 |
| 1975 | 13 | 10.8 | 4.9 | 10.8 | 4.9 |
| 1978 | 15 | 12.1 | 8.3 | 12.1 | 8.2 |
| 1981 | 20 | 13.6 | 40.9 | 13.6 | 40.3 |
| 1985 | 22 | 15.9 | 37.7 | 15.9 | 36.6 |
| 1988 | 25 | 17.8 | 51.9 | 17.9 | 50.1 |
| 1991 | 29 | 20.0 | 81.7 | 20.1 | 78.6 |
| 1994 | 32 | 22.4 | 92.4 | 22.6 | 88.0 |
| 1997 | 33 | 25.1 | 62.4 | 25.4 | 57.7 |
| 1999[1] | 34 | 27.1 | 27.4 | 42.9 | |
| 2002 | 37 | 30.4 | 26.3 [2] | 30.8 | 38.2 |
| 2006 | 39 | 35.4 | 36.0 | 9.3 | |
| 2007 | 36.7 | 37.4 | |||
| 2008 | 38.1 | 38.8 | 26.0 [3] | ||
| 2009 | 39.6 | 40.4 | |||
| 2010 | 41.1 | 41.9 | |||
| 2011 | 42.7 | 43.6 | |||
| 2012 | 44.4 | 45.3 | |||
| 2013 | 46.1 | 47.1 | |||
| 2014 | 47.9 | 48.9 | |||
| 2015 | 49.7 | 50.8 | |||
| 2016 | 51.6 | 52.8 | |||
| 2017 | 53.6 | 54.9 | |||
| 2018 | 55.7 | 57.0 | |||
| 2019 | 57.8 | 59.2 | |||
| 2020 | 60.1 | 61.5 | |||
| 2021 | 62.4 | 63.9 | |||
| 2022 | 64.8 | 66.4 | |||
| 2023 | 67.2 | 69.0 | |||
| 2024 | 69.8 | 71.7 | |||
| 2025 | 72.5 | 74.5 | |||
| 2026 | 75.3 | 77.4 | |||
| 2027 | 78.2 | 80.4 | |||
| 2028 | 81.1 | 83.5 | |||
| 2029 | 84.3 | 86.7 | |||
| 2030 | 87.5 | 90.1 | |||
| 2031 | 90.8 | 93.6 | |||
| 2032 | 94.3 | 97.2 | |||
| 2033 | 97.9 | 101.0 | |||
| 2034 | 101.6 | 104.9 | |||
| 2035 | 105.5 | 109.0 | |||
| 2036 | 109.5 | 113.2 | |||
| 2037 | 113.7 | 117.5 | |||
| 2038 | 118.0 | 122.1 | |||
| 2039 | 122.5 | 126.8 | |||
| 2040 | 127.2 | 131.7 | |||
| 2041 | 132.0 | 136.8 | |||
| 2042 | 137.0 | 142.1 | |||
| 2043 | 142.3 | 147.5 | |||
| 2044 | 147.7 | 153.2 | |||
| 2045 | 153.3 | 159.1 | |||
| 2046 | 159.1 | 165.2 | |||
| 2047 | 165.1 | 171.6 | |||
| 2048 | 171.4 | 178.2 |