Year annual % 1987 1.353404763859416 1988 11.219619895955944 1989 0.6635601533088646 1990 3.6880115907161013 1991 -9.437083184922074 1992 -14.826277361276382 1993 -15.483660784153017 1994 -20.056839700023517 1995 -6.36327917752763 1996 5.5112273623336705 1997 8.323771639974424 1998 0.567202187300893 1999 2.126778705767734 2000 4.194824154378551 2001 4.326996486233597 2002 -0.9308657991713716 2003 5.914001598124912 2004 5.739479911235108 2005 -1.2950748620897485 2006 2.000426384609881 2007 7.5127434754872695 2008 7.376440481794305 2009 1.651651395623361 2010 -1.65175287000649 2011 4.674715617138588 2012 -1.7381425831180337 2013 8.735789271236726 2014 1.957996975907733 2015 1.7588644068262624 2016 2.231805270363168 2017 2.7340918898976128 2018 1.7132091165781276 2019 2.439335197881107 2020 -8.894546882845063 2021 2.492922237436133 2022 5.819509917630896 2023 4.2692855628956465