| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
2006 | - | 990.1( 21) | 976.2( 94) | 987.1( 93) | 984.8( 84) | 992.5( 80) | 987.7( 87) | 995.6( 97) | 986.6( 97) | 986.2( 81) | 978.1( 90) | 980.6( 94) |
2007 | 981.3( 39) | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |