1989 6.3 6.5 7.5 5.9 5.8 7.4 6.3 7.2 7.1 8.1 6.8 7.5 1990 6.9 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1991 -999.0 6.5 -999.0 6.2 6.8 6.3 6.6 6.1 4.9 6.1 6.4 3.5 1992 6.4 6.7 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1993 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1994 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1995 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1996 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1997 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1998 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 1999 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 2000 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 2001 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 2002 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 -999.0 2003 -999.0 8.2 7.8 7.1 7.0 8.1 6.5 6.9 7.8 6.1 6.6 5.3 2004 7.2 4.7 7.4 6.6 6.8 6.3 5.7 8.0 5.1 6.7 8.5 4.8 2005 6.7 5.6 8.8 6.4 7.7 6.2 7.1 6.4 7.3 7.0 6.8 6.3 2006 5.1 7.7 8.0 7.6 5.6 7.1 6.5 6.1 7.0 7.1 7.2 6.2 2007 6.6 6.3 6.7 6.1 7.6 6.6 6.9 6.9 7.3 5.4 6.5 7.0 2008 5.5 8.7 7.7 5.5 6.6 6.7 6.2 5.1 3.8 5.6 8.5 6.4 2009 4.9 7.2 6.8 7.7 6.1 5.6 6.9 5.6 7.7 4.5 6.1 5.1 2010 4.6 7.5 6.7 5.9 5.2 8.0 5.7 7.2 8.2 6.0 5.7 7.5 2011 6.4 6.9 8.0 6.6 7.1 6.8 8.0 6.3 6.7 6.1 6.1 6.2 2012 7.2 7.3 6.3 7.0 5.0 7.7 5.9 5.0 6.8 5.3 4.5 5.4 2013 8.1 6.6 8.0 6.1 6.9 7.1 8.4 7.3 6.7 7.5 6.2 6.2 2014 6.5 7.6 7.9 7.6 8.3 6.2 5.7 7.2 6.1 7.9 6.7 7.3 2015 7.1 7.3 7.7 6.6 5.6 7.3 7.1 7.7 8.0 6.1 6.0 7.3 2016 8.2 6.4 6.9 7.0 7.1 6.7 7.5 5.5 5.6 5.9 5.2 7.1 2017 5.1 7.8 6.5 7.8 7.2 7.2 7.1 7.5 6.2 7.1 6.9 6.4 2018 5.0 5.8 7.0 6.4 6.6 6.3 8.3 7.7 6.3 5.7 6.4 2.4 2019 4.9 5.7 8.7 6.8 6.1 6.6 5.1 7.2 7.1 5.1 6.9 5.7 2020 7.5 7.7 6.6 6.9 7.4 7.8 6.7 6.8 6.9 7.3 6.1 6.3 2021 4.0 7.3 7.3 7.8 7.0 6.4 6.7 6.9 7.3 7.3 5.0 8.3 2022 4.6 6.9 6.7 8.6 6.9 6.8 5.8 8.2 7.7 6.6 6.4 6.1 2023 7.3 6.8 7.7 6.7 4.7 6.8 3.4 3.5 7.6 6.9 5.9 6.5