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Roman numerals

I	1
II	2
III	3
IV	4
V	5
VI	6
VII	7
VIII	8
IX	9
X	10
XI	11
XII	12
XIII	13
XIV	14
XV	15
XVI	16
XVII	17
XVIII	18
XIX	19
XX	20
XXI	21
XXX	30
XL	40
L	50
LX	60
XC	90
C	100
CC	200
D	500
DCC	700
DCCXIX	719
CM	900
M	1000
MC	1100
MCX	1110
MCMXCI	1991
MM	2000
MMX	2010