1 2011 36.5 2 1998 32.9 3 1997 30.4 4 2005 29.1 5 2006 28.5 6 2019 26.6 7 1995 25.8 8 2017 25.6 9 2008 23.6 10 2004 23.5 11 2009 23.3 12 1996 22.6 13 1989 22.4 14 2020 21.9 15 2023 21.1 16 1993 20.1 17 2016 19.9 18 2010 19.7 19 2014 18.8 20 2013 18.5 21 2000 18.4 22 2002 18.2 23 2021 17.5 24 2001 17.4 25 1991 16.7 26 1999 16.1 27 1994 15.2 28 2003 14.6 29 2007 13.4 30 2022 12.1 31 2012 11.5 32 1990 11.4 33 2018 11.1 34 1992 10.8 35 2015 9.3