| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2006 | - | 992.0( 21) | 976.8( 94) | 987.6( 96) | 984.9( 85) | 992.8( 82) | 988.0( 89) | 995.3( 97) | 987.1( 93) | 984.8( 85) | 977.9( 92) | 980.7( 92) |
2007 | 980.3( 41) | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |