year	month	energy	cost
 	 	(kWh)	($)
2001	10	166	32.16
2001	11	210	37.81
2001	12	161	31.26
2002	01	194	37.18
2002	02	209	39.48
2002	03	161	32.19
2002	04	184	34.28
2002	05	193	39.67
2002	06	154	35.61
2002	07	000	10.80
2002	08	246	51.27
2002	09	160	36.20