Year % 1982 23.190345889103693 1983 6.358700076798954 1984 4.708178061732885 1985 16.698110159062015 1986 10.066283835775975 1987 4.1614032108592 1988 9.478786406151835 1989 11.486340646076874 1990 -15.546442843665584 1991 17.119033135172955 1992 10.547113531453723 1993 12.259372516391576 1994 11.825184520234332 1995 9.85223446050124 1996 13.189052917964887 1997 18.062680269072256 1998 13.760629747798252 1999 18.25001055343002 2000 14.387449732128694 2001 17.756432661153692 2002 14.013373810872052 2003 19.304542410072177 2004 11.605929315459653 2005 10.914043794748983 2006 10.617048659032204 2007 10.10943805603526 2008 10.26228970330728 2009 16.97480590197341 2010 11.476918655858547 2011 8.068780911388052 2012 11.607785652991172 2013 9.474317624347487 2014 9.65416342336953 2015 10.268107187428699 2016 7.579649227607755 2017 6.24133392698675 2018 9.010508064772372 2019 9.209361687603732 2020 9.335135351666022 2021 7.9430944586680186 2022 1.0791776133037307 2023 -2.217601484992763