date	high	low
201201	12.4	-0.2
201202	17.6	-1.7
201203	21.9	1.8
201204	25.5	3.1
201205	27.5	10
201206	30.2	17.5
201207	34.9	19.8
201208	36.1	23.2
201209	32.2	18
201210	27.5	10.9
201211	21.1	2.7
201212	14.9	0.3