Year annual % 1983 34.91170495389905 1984 -16.28634310205027 1985 15.23453715234537 1986 4.322766570605188 1987 26.220073664825044 1988 15.529819441911364 1989 17.688846791380534 1990 3.8900067069081152 1991 2.9761136216914137 1992 5.253589116669801 1993 3.3772112692834595 1994 7.305830836598294 1995 -6.131872852233677 1996 9.758608854822102 1997 -4.242234730039608 1998 -14.15587242843148 1999 18.544347936346924 2000 14.530965878703606 2001 52.31036234882092 2002 11.260911871936639 2003 -2.0674855596899517 2004 -2.8928938811876073 2005 7.058461531112621 2006 12.504191359977213 2007 9.558293961839242 2008 11.531908640932956 2009 13.344734159871518 2010 19.412066781683087 2011 9.57178617646536 2012 15.991162320531267 2013 2.8496315109187047 2014 8.096941672844096 2015 17.110323671325283 2016 10.259646113404617 2017 1.8167923357136746 2018 8.471500078968406 2019 5.906699936337708 2020 12.897024029851956 2021 18.541562821185728 2022 7.37831732181366 2023 9.357295193163887