Year annual % 1986 3.499999873095774 1987 -1.20000004458646 1988 13.900001094353968 1989 -6.500000663647029 1990 -0.5999996313366296 1991 -7.099999096225247 1992 -29.000001055447086 1993 -16.399999844882245 1994 -21.299998013094864 1995 -12.416322231898974 1996 -16.69999843533887 1997 1.6806741358806647 1998 5.312867659400425 1999 3.699550716658507 2000 8.32432449473859 2001 9.580836178429507 2002 10.800003759166543 2003 10.9999990780572 2004 10.299998941011651 2005 6.699998516554089 2006 7.000003211089961 2007 7.800000118721613 2008 7.899998271549393 2009 3.9000011482649626 2010 6.499999085852352 2011 7.400000599567107 2012 7.4999994632152465 2013 7.39999974700379 2014 6.7000006901625255 2015 6.019303317711859 2016 6.8999999999999915 2017 7.100000418643091 2018 7.5999988895536035 2019 7.40000016310556 2020 4.400001115534934 2021 9.399999550375227 2022 8.000000338463636 2023 8.299999216519353