Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1980 | - | - | - | 32.4(100) | 35.2(100) | 28.7(100) | 31.5(100) | 31.5(100) | 19.9(100) | 31.4(100) | 18.0(100) | 14.4(100) |
1981 | 20.8(100) | 16.5(100) | 40.0(100) | 21.5(100) | 28.6(100) | 27.1(100) | 27.8(100) | 14.2(100) | 21.5(100) | 28.4(100) | 25.5(100) | 24.8(100) |
1982 | 18.5(100) | 20.5(100) | 28.5(100) | 17.3(100) | 25.5(100) | 29.0(100) | 28.8(100) | 31.5(100) | 27.0(100) | 20.1(100) | 27.4(100) | 15.5(100) |
1983 | 17.8(100) | 17.1(100) | 34.0(100) | 42.8(100) | 39.0(100) | 28.7(100) | 19.3(100) | 28.0(100) | 20.8(100) | 34.8(100) | 27.0(100) | 23.1(100) |
1984 | 12.9(100) | 23.6(100) | 21.4(100) | 26.7(100) | 29.3(100) | 35.6(100) | 26.7(100) | 17.8(100) | 21.4(100) | 26.5(100) | 18.0(100) | 18.3(100) |
1985 | 20.3(100) | 20.5(100) | 27.0(100) | 26.0(100) | 33.5(100) | 23.1(100) | 16.6(100) | 19.7(100) | 20.9(100) | 25.9(100) | 20.7(100) | 18.1(100) |
1986 | 18.1(100) | 19.1(100) | 24.9(100) | 28.4(100) | 34.3(100) | 16.9(100) | 23.7(100) | 19.7(100) | 19.0(100) | 29.4(100) | 23.3(100) | 25.9(100) |
1987 | 14.4(100) | 19.8(100) | 19.0(100) | 31.1(100) | 31.1(100) | 30.0(100) | 34.0(100) | 25.7(100) | 25.0(100) | 20.7(100) | 16.5(100) | 19.7(100) |
1988 | 19.5(100) | 14.6(100) | 23.5(100) | 35.2(100) | 26.2(100) | 28.2(100) | 24.4(100) | 31.6(100) | 22.7(100) | 24.3(100) | 28.5(100) | 24.5(100) |
1989 | 24.9(100) | 20.0(100) | 26.5(100) | 30.8(100) | 24.7(100) | 23.9(100) | 21.2(100) | 24.5(100) | 25.9(100) | 27.2(100) | 26.1(100) | 23.5(100) |
1990 | 23.0(100) | 20.9(100) | - | - | - | - | - | - | - | - | - | - |
1991 | - | - | - | - | - | - | - | - | - | - | - | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |