Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1987 | - | 22.3( 93) | 30.1(100) | 25.2(100) | 21.7(100) | 26.2(100) | 24.3(100) | 24.9(100) | 28.0(100) | 23.5(100) | 24.2(100) | 14.9(100) |
1988 | 20.0(100) | 23.8(100) | 26.6(100) | 21.0(100) | 24.6(100) | 30.0(100) | 24.9(100) | 28.0(100) | 26.4(100) | 21.0(100) | 15.8(100) | 12.7(100) |
1989 | 16.2(100) | 23.8(100) | 26.0(100) | 23.9(100) | 13.6(100) | 22.4(100) | 30.7(100) | 29.3(100) | 20.3(100) | 23.8(100) | 25.2(100) | 15.3(100) |
1990 | 16.6(100) | 21.6(100) | 25.5(100) | 23.5(100) | 21.6(100) | 26.9(100) | 30.8(100) | 22.5(100) | 22.2(100) | 27.0(100) | 19.9(100) | 14.0(100) |
1991 | 19.7(100) | 25.5(100) | 21.8(100) | 22.5(100) | 24.5(100) | 25.9(100) | 26.6(100) | 23.5(100) | 25.6(100) | 21.0(100) | 21.2(100) | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |