Year annual % 1961 2.99236759278997 1962 1.10373125690825 1963 1.02883408574012 1964 1.05291053584313 1965 1.00346609779566 1966 0.926446929305 1967 0.850944297257204 1968 0.773470987216663 1969 0.770721176320319 1970 0.433176523644296 1971 0.422751142162509 1972 0.855864874103741 1973 0.970405426654067 1974 1.0326455261866 1975 1.04961038811862 1976 1.05791840570578 1977 1.05907443980237 1978 1.01996377640607 1979 0.993954931762582 1980 0.823532690227528 1981 0.726099437372322 1982 0.774370072451157 1983 0.726754862038002 1984 0.687462659789032 1985 0.673954439753091 1986 0.619376645352564 1987 0.556839232981892 1988 0.530027872017792 1989 0.481564764827773 1990 0.439617094726275 1991 0.0774724369780578 1992 0.0324651148981277 1993 0.381719886651125 1994 0.39405443003197 1995 0.29263220653253 1996 0.211674396431709 1997 0.184629991205462 1998 0.13412159848536 1999 0.102053161046239 2000 -0.135376487794425 2001 -0.18301227099618 2002 -0.0363525509687338 2003 -0.0658215070322074 2004 -0.0203617202597358 2005 0.00980913417308711 2006 0.00459711883568263 2007 0.0291784011934372 2008 0.0857552995195914 2009 0.133257321027673 2010 0.0931912731899838 2011 0.128936462723796 2012 0.170183855326072 2013 0.107458009492367 2014 0.0970454215834878 2015 0.0950338786482762 2016 0.128922329956911 2017 0.155178995687406 2018 0.138508159611326 2019 0.135328072840865 2020 0.0857694756149868 2021 -0.212358807611049 2022 -0.284860959688394 2023 -0.0923148510113108