Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1980 | - | - | - | 32.4(100) | 33.4(100) | 31.3(100) | 29.7(100) | 33.3(100) | 22.1(100) | 31.8(100) | 15.8(100) | 13.5(100) |
1981 | 18.8(100) | 16.6(100) | 43.5(100) | 21.6(100) | 26.9(100) | 28.4(100) | 27.6(100) | 13.3(100) | 26.7(100) | 30.3(100) | 26.1(100) | 26.5(100) |
1982 | 19.4(100) | 17.6(100) | 29.2(100) | 15.7(100) | 24.5(100) | 29.9(100) | 28.4(100) | 28.0(100) | 25.7(100) | 18.7(100) | 23.8(100) | 16.6(100) |
1983 | 17.4(100) | 17.1(100) | 35.6(100) | 40.5(100) | 35.6(100) | 29.5(100) | 18.6(100) | 26.3(100) | 23.2(100) | 34.7(100) | 26.7(100) | 21.5(100) |
1984 | 13.2(100) | 22.9(100) | 20.7(100) | 25.1(100) | 30.0(100) | 35.0(100) | 22.1(100) | 19.8(100) | 23.8(100) | 25.5(100) | 16.4(100) | 18.2(100) |
1985 | 22.8(100) | 19.6(100) | 28.0(100) | 27.9(100) | 30.1(100) | 23.3(100) | 15.6(100) | 19.1(100) | 21.0(100) | 27.0(100) | 20.4(100) | 16.6(100) |
1986 | 21.3(100) | 21.5(100) | 20.5(100) | 24.0(100) | 34.3(100) | 16.3(100) | 24.2(100) | 20.4(100) | 22.0(100) | 33.8(100) | 25.1(100) | 25.7(100) |
1987 | 16.6(100) | 17.5(100) | 20.2(100) | 29.5(100) | 31.5(100) | 28.2(100) | 31.1(100) | 28.6(100) | 28.5(100) | 18.2(100) | 15.7(100) | 18.9(100) |
1988 | 21.3(100) | 14.5(100) | 24.7(100) | 37.6(100) | 28.6(100) | 27.0(100) | 26.0(100) | 31.0(100) | 20.9(100) | 25.6(100) | 28.9(100) | 23.1(100) |
1989 | 26.9(100) | 19.8(100) | 27.4(100) | 30.0(100) | 23.0(100) | 26.4(100) | 23.9(100) | 27.0(100) | 25.5(100) | 23.2(100) | 28.6(100) | 22.9(100) |
1990 | 23.5(100) | 23.4(100) | 22.2( 42) | - | - | - | - | - | - | - | - | - |
1991 | - | - | - | - | - | - | - | - | - | - | - | - |
1992 | - | - | - | - | - | - | - | - | - | - | - | - |
1993 | - | - | - | - | - | - | - | - | - | - | - | - |
1994 | - | - | - | - | - | - | - | - | - | - | - | - |
1995 | - | - | - | - | - | - | - | - | - | - | - | - |
1996 | - | - | - | - | - | - | - | - | - | - | - | - |
1997 | - | - | - | - | - | - | - | - | - | - | - | - |
1998 | - | - | - | - | - | - | - | - | - | - | - | - |
1999 | - | - | - | - | - | - | - | - | - | - | - | - |
2000 | - | - | - | - | - | - | - | - | - | - | - | - |
2001 | - | - | - | - | - | - | - | - | - | - | - | - |
2002 | - | - | - | - | - | - | - | - | - | - | - | - |
2003 | - | - | - | - | - | - | - | - | - | - | - | - |
2004 | - | - | - | - | - | - | - | - | - | - | - | - |
2005 | - | - | - | - | - | - | - | - | - | - | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |