The numbers 2009 to 2015 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 2009 | = | MMIX | = | 1000 + 1000 + 10 − 1 |
| 2010 | = | MMX | = | 1000 + 1000 + 10 |
| 2011 | = | MMXI | = | 1000 + 1000 + 10 + 1 |
| 2012 | = | MMXII | = | 1000 + 1000 + 10 + 1 + 1 |
| 2013 | = | MMXIII | = | 1000 + 1000 + 10 + 1 + 1 + 1 |
| 2014 | = | MMXIV | = | 1000 + 1000 + 10 + 5 − 1 |
| 2015 | = | MMXV | = | 1000 + 1000 + 10 + 5 |