Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1990 | -14.0( 93) | -18.7(100) | -23.4(100) | -26.5(100) | -25.9(100) | -26.1(100) | -20.9(100) | -31.7(100) | -29.9(100) | -27.3( 58) | -14.1( 66) | -15.6( 35) |
1991 | -14.6( 74) | -16.3(100) | -23.2(100) | -23.7(100) | -26.6(100) | -23.6(100) | -27.8(100) | -25.0(100) | -17.4( 50) | - | -17.9( 76) | -12.2( 54) |
1992 | -14.0(100) | -17.9(100) | -22.0(100) | -26.7(100) | -25.4(100) | -23.3( 50) | - | - | - | - | - | - |
1993 | -12.5( 67) | -17.9(100) | -22.0(100) | -26.1(100) | -30.5(100) | -29.4(100) | -27.6(100) | -27.4(100) | -25.4(100) | -25.9(100) | -21.0( 60) | -13.7( 61) |
1994 | -14.0(100) | -19.6(100) | -25.5(100) | -23.7(100) | -31.0(100) | -27.9(100) | -25.1(100) | -30.9(100) | -25.2(100) | -24.6(100) | -20.0(100) | -16.0( 96) |
1995 | -15.4( 96) | -17.0( 92) | -22.7( 90) | -24.4( 86) | -28.8( 87) | -26.9(100) | -27.5(100) | -25.6(100) | -27.4(100) | -26.3(100) | -19.8( 93) | -14.3(100) |
1996 | -15.6(100) | -18.5(100) | -20.8(100) | -23.1(100) | -29.1(100) | -28.7(100) | -27.3(100) | -25.1(100) | -25.9(100) | -27.3(100) | -17.1(100) | -14.3(100) |
1997 | -14.8(100) | -18.7(100) | -23.0(100) | -26.6(100) | -27.8(100) | -26.2(100) | -29.8(100) | -31.2(100) | -27.2(100) | -23.4( 96) | -16.3(100) | -15.4(100) |
1998 | -16.1(100) | -16.8(100) | -25.6(100) | -26.3(100) | -26.9(100) | -25.5(100) | -29.3(100) | -27.5(100) | -28.0(100) | -24.3(100) | -20.6(100) | -14.2(100) |
1999 | -14.4(100) | -18.3(100) | -23.8(100) | -29.1(100) | -28.9(100) | -26.6(100) | -27.0(100) | -28.4(100) | -26.7(100) | -23.7(100) | -19.0(100) | -15.8(100) |
2000 | -15.9(100) | -18.7(100) | -22.9(100) | -27.1(100) | -26.3(100) | -27.9(100) | -27.0(100) | -28.4(100) | -23.7(100) | -25.5( 87) | -19.1(100) | -16.2(100) |
2001 | -14.4(100) | -18.2(100) | -23.1(100) | -26.4(100) | -26.7(100) | -27.1(100) | -27.6(100) | -27.9(100) | -26.0(100) | -25.6(100) | -20.8(100) | -13.8(100) |
2002 | -12.9(100) | -18.6(100) | -21.8(100) | -26.4(100) | -25.4(100) | -24.3(100) | -28.8(100) | -31.8(100) | -24.5(100) | -26.2(100) | -20.8(100) | -15.8(100) |
2003 | -12.8(100) | -18.7(100) | -25.1(100) | -27.6(100) | -26.5(100) | -28.4(100) | -27.4(100) | -27.7(100) | -27.7(100) | -25.6(100) | -21.5(100) | -14.2(100) |
2004 | -14.3(100) | -17.9(100) | -23.6(100) | -25.6(100) | -28.8(100) | -22.9(100) | -32.2(100) | -27.1(100) | -27.2(100) | -26.0(100) | -18.8(100) | -13.2(100) |
2005 | -14.2(100) | -18.8(100) | -23.2(100) | -26.4(100) | -26.8(100) | -26.9(100) | -27.6(100) | -27.9(100) | -25.4(100) | -21.6( 51) | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |
2010 | - | - | - | - | - | - | - | - | - | - | - | - |
2011 | - | - | - | - | - | - | - | - | - | - | - | - |
2012 | - | - | - | - | - | - | - | - | - | - | - | - |
2013 | - | - | - | - | - | - | - | - | - | - | - | - |
2014 | - | - | - | - | - | - | - | - | - | - | - | - |
2015 | - | - | - | - | - | - | - | - | - | - | - | - |
2016 | - | - | - | - | - | - | - | - | - | - | - | - |
2017 | - | - | - | - | - | - | - | - | - | - | - | - |
2018 | - | - | - | - | - | - | - | - | - | - | - | - |
2019 | - | - | - | - | - | - | - | - | - | - | - | - |
2020 | - | - | - | - | - | - | - | - | - | - | - | - |
2021 | - | - | - | - | - | - | - | - | - | - | - | - |
2022 | - | - | - | - | - | - | - | - | - | - | - | - |
2023 | - | - | - | - | - | - | - | - | - | - | - | - |
2024 | - | - | - | - | - | - | - | - | - | - | - | - |