Talen 2015 till 2021 i romerska siffror
I högerkolumnen visas hur varje romersk siffra bidrar till att man hamnar vid rätt tal.
| 2015 | = | MMXV | = | 1000 + 1000 + 10 + 5 |
| 2016 | = | MMXVI | = | 1000 + 1000 + 10 + 5 + 1 |
| 2017 | = | MMXVII | = | 1000 + 1000 + 10 + 5 + 1 + 1 |
| 2018 | = | MMXVIII | = | 1000 + 1000 + 10 + 5 + 1 + 1 + 1 |
| 2019 | = | MMXIX | = | 1000 + 1000 + 10 + 10 − 1 |
| 2020 | = | MMXX | = | 1000 + 1000 + 10 + 10 |
| 2021 | = | MMXXI | = | 1000 + 1000 + 10 + 10 + 1 |