Year annual % 1976 18.428817049096814 1977 9.891921925689601 1978 27.54436325678497 1979 23.30818414322251 1980 4.840967778734171 1981 18.677481576734756 1982 12.553239370879417 1983 12.59867592825723 1984 -0.39855048572255225 1985 29.57245204448075 1986 15.745728250793706 1987 7.387872088519373 1988 25.942052158781433 1989 12.560224490858898 1990 13.460509533876861 1991 1.4661911911274021 1992 7.816389950284002 1993 9.548319450107764 1994 6.766080901151537 1995 5.82048589045053 1996 6.797146826953986 1997 12.064986314537656 1998 13.13829262096504 1999 12.886830575311864 2000 4.7575376141431365 2001 5.022909495446385 2002 4.553222078377279 2003 2.256514890429476 2004 4.727323166829455 2005 3.9929593565005757 2006 4.762267825718521 2007 7.975693705897499 2008 4.071643253518386 2009 -2.0124633822568216 2010 2.676140966352299 2011 2.161353920573322 2012 4.891295502402998 2013 6.746036708071373 2014 8.699324247448894 2015 4.165312988264888 2016 1.8801301845534635 2017 1.3951943306389105 2018 1.239028743644818 2019 5.401322864711658 2020 -6.5581732681195115 2021 12.781611254383895 2022 0.18196736718671466 2023 4.016331419716484