Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1980 | - | - | - | 32.9(100) | 33.3(100) | 29.6(100) | 30.8(100) | 32.1(100) | 20.0(100) | 32.3(100) | 17.4(100) | 14.7(100) |
1981 | 20.4(100) | 18.0(100) | 41.1(100) | 21.7(100) | 26.8(100) | 28.2(100) | 26.0(100) | 12.7(100) | 24.8(100) | 29.3(100) | 25.8(100) | 25.6(100) |
1982 | 18.1(100) | 19.8(100) | 28.1(100) | 15.9(100) | 24.4(100) | 30.0(100) | 28.5(100) | 31.1(100) | 26.5(100) | 19.4(100) | 26.4(100) | 16.3(100) |
1983 | 17.3(100) | 16.6(100) | 35.1(100) | 42.1(100) | 36.9(100) | 27.5(100) | 19.4(100) | 27.7(100) | 21.3(100) | 35.3(100) | 26.6(100) | 21.7(100) |
1984 | 13.4(100) | 23.5(100) | 21.7(100) | 24.6(100) | 30.2(100) | 34.6(100) | 24.3(100) | 19.0(100) | 21.2(100) | 24.8(100) | 17.6(100) | 18.2(100) |
1985 | 21.3(100) | 20.0(100) | 27.0(100) | 26.5(100) | 31.0(100) | 22.7(100) | 16.8(100) | 20.4(100) | 20.2(100) | 26.9(100) | 20.3(100) | 17.4(100) |
1986 | 20.2(100) | 19.8(100) | 22.9(100) | 26.0(100) | 33.1(100) | 18.5(100) | 23.8(100) | 19.4(100) | 20.5(100) | 29.9(100) | 22.1(100) | 25.9(100) |
1987 | 15.5(100) | 18.1(100) | 19.0(100) | 30.0(100) | 30.1(100) | 28.5(100) | 30.5(100) | 26.9(100) | 26.6(100) | 18.9(100) | 16.0(100) | 19.8(100) |
1988 | 20.9(100) | 14.8(100) | 23.2(100) | 37.0(100) | 26.5(100) | 27.7(100) | 26.5(100) | 31.7(100) | 21.8(100) | 25.4(100) | 29.0(100) | 23.9(100) |
1989 | 25.7(100) | 20.5(100) | 27.2(100) | 31.7(100) | 26.0(100) | 24.6(100) | 23.1(100) | 24.5(100) | 25.8(100) | 25.7(100) | 27.6(100) | 23.7(100) |
1990 | 22.7(100) | 21.6(100) | 23.6( 44) | - | - | - | - | - | - | - | - | - |
1991 | - | - | - | - | - | - | - | - | - | - | - | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |