| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2006 | - | 988.0( 21) | 976.5( 97) | 987.6(100) | 983.9( 90) | 992.7( 87) | 988.2( 94) | 994.7( 94) | 987.3( 97) | 984.1( 87) | 977.8( 93) | 980.9( 94) |
2007 | 979.6( 42) | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |