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Period
1 month
3 month
12 month
2010
June
0.446
0.728
1.281
May
0.423
0.687
1.249
April
0.404
0.644
1.224
March
0.406
0.645
1.215
February
0.421
0.662
1.225
January
0.437
0.680
1.232
2009
December
0.478
0.712
1.242
November
0.435
0.716
1.231
October
0.430
0.738
1.243
September
0.455
0.772
1.261
August
0.508
0.860
1.334
July
0.610
0.975
1.412
June
0.913
1.228
1.610
May
0.884
1.282
1.644
April
1.012
1.422
1.771
March
1.269
1.635
1.909
February
1.628
1.943
2.135
January
2.142
2.457
2.622
2008
December
2.993
3.293
3.452
November
3.843
4.238
4.350
October
4.831
5.113
5.248
September
4.660
5.019
5.384
August
4.487
4.965
5.323
July
4.472
4.961
5.393
June
4.472
4.941
5.361
May
4.387
4.857
4.994
April
4.369
4.784
4.820
March
4.305
4.596
4.590
February
4.182
4.362
4.349
January
4.197
4.482
4.498
2007
December
4.711
4.848
4.793
November
4.216
4.639
4.607
October
4.236
4.687
4.647
September
4.434
4.742
4.725
August
4.308
4.544
4.666
July
4.105
4.216
4.564
June
4.098
4.148
4.505
May
3.917
4.069
4.370
April
3.859
3.975
4.253
March
3.844
3.891
4.106
February
3.651
3.818
4.094
January
3.616
3.752
4.064
2006
December
3.643
3.687
3.928
November
3.421
3.597
3.864
October
3.350
3.502
3.799
September
3.157
3.335
3.715
August
3.094
3.226
3.615
July
2.939
3.102
3.539
June
2.869
2.986
3.401
May
2.693
2.889
3.308
April
2.649
2.794
3.221
March
2.633
2.723
3.105
February
2.459
2.600
2.914
January
2.388
2.512
2.833
2005
December
2.412
2.474
2.786
November
2.223
2.361
2.684
October
2.121
2.197
2.414
September
2.115
2.139
2.220
August
2.113
2.132
2.223
July
2.106
2.119
2.168
June
2.104
2.111
2.103
May
2.104
2.126
2.193
April
2.105
2.137
2.265
March
2.103
2.137
2.335
February
2.104
2.138
2.310
January
2.111
2.145
2.312
Report updated 1 Jul 2010