Historical Volatility

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Yearly Average
2003												36.5	36.5
2004	25.0	41.5	24.3	28.1	42.1	22.7	33.7	59.8	22.6	33.5	21.0	20.5	31.2
2005	18.2	36.4	17.7	35.4	15.7	20.6	18.9	50.7	19.3	42.7	21.3	12.1	25.8
2006	20.9	26.0	22.0	66.2	16.7	20.4	17.6	48.2	21.4	33.8	20.9	14.9	27.4
2007	20.3	16.2	18.4	55.6	10.8	21.9	27.1	35.1	13.9	11.9	32.4	32.0	24.6
2008	18.7	42.4	27.4	70.1	31.1	21.5	16.0	62.1	22.8	46.4	13.0	43.0	34.5
2009	25.6	29.9	21.4	89.1	39.6	34.3	50.1	48.1	29.2	30.4			39.8
Mean	21.5	32.1	21.9	57.4	26.0	23.6	27.2	50.7	21.5	33.1	21.7	26.5
High	25.6	42.4	27.4	89.1	42.1	34.3	50.1	62.1	29.2	46.4	32.4	43.0
Low	18.2	16.2	17.7	28.1	10.8	20.4	17.6	35.1	13.9	11.9	13.0	12.1