Year annual % 1976 17.48481304329917 1977 18.236066884713026 1978 10.668371143289335 1979 5.106931934462963 1980 4.529155135971479 1981 0.033328506895941246 1982 10.179030043504483 1983 6.387397375848195 1984 3.1601741439964997 1985 4.63289756044054 1986 0.5739021710915608 1987 4.305393697136168 1988 9.340996495534199 1989 5.390172437484807 1990 6.655453198487521 1991 7.107777474013915 1992 0.46803485493882135 1993 -6.913998917979768 1994 4.645925486798291 1995 26.746033008385766 1996 2.0716900118298014 1997 1.0454563406400865 1998 5.903062891672349 1999 3.017664284169655 2000 6.8795020392018955 2001 4.412147809599617 2002 1.9088863416170767 2003 3.099060214072253 2004 5.768868939874466 2005 2.4241575338364925 2006 2.1965921663872052 2007 7.436141448583271 2008 5.53035045004404 2009 -9.001735504684731 2010 2.148163324065294 2011 -3.387718167596006 2012 -4.242971822792057 2013 -6.787749202202292 2014 1.065592665017661 2015 3.717666062204586 2016 4.656902821022271 2017 3.8618685149863126 2018 3.847024195618957 2019 2.455551605754607 2020 -7.88477050444871 2021 4.577070337287964 2022 7.072649352288238