| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2006 | - | 992.0( 18) | 977.7( 94) | 987.6( 97) | 986.1( 77) | 993.1( 77) | 987.6( 87) | 995.0( 97) | 987.8( 90) | 983.2( 81) | 978.6( 90) | 981.0( 97) |
2007 | 980.1( 42) | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |