Year annual % 1981 -4.400001218650445 1982 0 1983 4.200001428537448 1984 6.000002165090606 1985 3.499999490086239 1986 2.9000017424685893 1987 4.08274863510718 1988 6.128890477650884 1989 0.04162146183746529 1990 -3.45009868500253 1991 0.9913593020447422 1992 -5.838280733131413 1993 -23.9834174420578 1994 1.339363436479914 1995 15.000000028863369 1996 13.544369755102565 1997 7.274277354603726 1998 4.69114645093552 1999 2.1814897184045776 2000 3.054624234307852 2001 4.205998556195098 2002 13.66568876085617 2003 2.990000000000009 2004 10.950000005946478 2005 15.029999990551318 2006 11.549999997879027 2007 14.0100000086059 2008 11.169999994214635 2009 0.8600000021527876 2010 4.398375938107634 2011 3.472053147981029 2012 8.542107075841415 2013 4.95461303112738 2014 4.822559269621564 2015 0.9435715613250011 2016 -2.5801112218828024 2017 -0.14714982544920474 2018 -1.3163616889689536 2019 -0.7022729576160174 2020 -5.638214717149339 2021 1.1992105214515334 2022 3.0454030095492755 2023 0.8560009348457243