Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1990 | -12.8( 90) | -17.6(100) | -22.4(100) | -26.4(100) | -25.0(100) | -27.1(100) | -21.5(100) | -30.3(100) | -29.4(100) | -24.3( 61) | -8.8( 63) | -11.1( 38) |
1991 | -12.9( 74) | -15.2(100) | -22.3(100) | -23.4(100) | -26.5(100) | -23.4(100) | -27.4(100) | -25.2(100) | -17.5( 56) | - | -17.1( 76) | -11.3( 48) |
1992 | -12.6(100) | -16.7(100) | -21.0(100) | -26.4(100) | -25.3(100) | -24.2( 53) | - | - | - | - | - | - |
1993 | -11.5( 67) | -17.1(100) | -21.2(100) | -25.8(100) | -29.8(100) | -30.0(100) | -27.2(100) | -27.6(100) | -25.7(100) | -25.1(100) | -20.1( 63) | -12.5( 58) |
1994 | -12.7(100) | -18.5(100) | -24.7(100) | -24.0(100) | -31.4(100) | -28.6(100) | -24.7(100) | -30.8(100) | -24.8(100) | -23.5(100) | -19.6(100) | -14.8( 93) |
1995 | -14.2( 96) | -16.1( 89) | -22.2( 90) | -24.6( 63) | -27.3( 83) | -27.4(100) | -28.1(100) | -25.4(100) | -27.3(100) | -25.8(100) | -19.1( 90) | -13.5( 90) |
1996 | -14.8(100) | -17.3(100) | -20.2(100) | -23.0(100) | -28.7(100) | -28.9(100) | -27.7(100) | -25.0(100) | -25.6(100) | -26.3(100) | -16.1(100) | -12.9(100) |
1997 | -13.6(100) | -17.5(100) | -22.0(100) | -26.6(100) | -28.3(100) | -25.9(100) | -29.6(100) | -32.2(100) | -27.8(100) | -22.7( 83) | -15.7(100) | -14.6(100) |
1998 | -15.1(100) | -15.6(100) | -25.0(100) | -26.3(100) | -26.7(100) | -25.3(100) | -29.0(100) | -28.1(100) | -27.8(100) | -23.4(100) | -19.8(100) | -13.0(100) |
1999 | -13.3(100) | -16.9(100) | -23.3(100) | -28.4(100) | -29.3(100) | -26.7(100) | -26.2(100) | -28.8(100) | -26.8(100) | -22.8(100) | -17.8(100) | -14.6(100) |
2000 | -14.7(100) | -18.1(100) | -22.4(100) | -26.9(100) | -26.3(100) | -28.0(100) | -27.0(100) | -28.0(100) | -22.9(100) | -24.2( 93) | -17.9(100) | -14.5(100) |
2001 | -13.4(100) | -17.2(100) | -22.7(100) | -26.0(100) | -26.0(100) | -27.2(100) | -26.8(100) | -28.8(100) | -26.2(100) | -25.3(100) | -19.8(100) | -12.6(100) |
2002 | -11.4(100) | -17.4(100) | -20.9(100) | -26.0(100) | -25.8(100) | -24.2(100) | -28.4(100) | -31.8(100) | -24.3(100) | -24.5(100) | -19.4(100) | -14.3(100) |
2003 | -11.6(100) | -17.8(100) | -24.1(100) | -27.0(100) | -26.3(100) | -27.9(100) | -28.5(100) | -27.8(100) | -27.6(100) | -25.1(100) | -20.3(100) | -12.9(100) |
2004 | -12.6(100) | -17.3(100) | -23.4(100) | -25.0(100) | -28.4(100) | -24.3(100) | -31.2(100) | -25.8(100) | -26.7(100) | -25.0(100) | -18.0(100) | -12.2(100) |
2005 | -12.6(100) | -18.2(100) | -22.8(100) | -26.5(100) | -26.5(100) | -27.8(100) | -27.7(100) | -27.7(100) | -25.5(100) | -21.2( 54) | - | - |
2006 | - | - | - | - | - | - | - | - | - | - | - | - |
2007 | - | - | - | - | - | - | - | - | - | - | - | - |
2008 | - | - | - | - | - | - | - | - | - | - | - | - |
2009 | - | - | - | - | - | - | - | - | - | - | - | - |
2010 | - | - | - | - | - | - | - | - | - | - | - | - |
2011 | - | - | - | - | - | - | - | - | - | - | - | - |
2012 | - | - | - | - | - | - | - | - | - | - | - | - |
2013 | - | - | - | - | - | - | - | - | - | - | - | - |
2014 | - | - | - | - | - | - | - | - | - | - | - | - |
2015 | - | - | - | - | - | - | - | - | - | - | - | - |
2016 | - | - | - | - | - | - | - | - | - | - | - | - |
2017 | - | - | - | - | - | - | - | - | - | - | - | - |
2018 | - | - | - | - | - | - | - | - | - | - | - | - |
2019 | - | - | - | - | - | - | - | - | - | - | - | - |
2020 | - | - | - | - | - | - | - | - | - | - | - | - |
2021 | - | - | - | - | - | - | - | - | - | - | - | - |
2022 | - | - | - | - | - | - | - | - | - | - | - | - |
2023 | - | - | - | - | - | - | - | - | - | - | - | - |
2024 | - | - | - | - | - | - | - | - | - | - | - | - |